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Mesozoic

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4243: 1704: 4232: 1622: 1198: 1058: 1160: 985: 1565:. The formation of new crust beneath the surface displaced ocean waters by as much as 200 m (656 ft) above today's sea level, flooding coastal areas. Furthermore, Pangaea began to rift into smaller divisions, creating new shoreline around the Tethys Ocean. Temperatures continued to increase, then began to stabilize. 1013:. On land, pine forests flourished, as did groups of insects like mosquitoes and fruit flies. Reptiles began to get bigger and bigger, and the first crocodilians and dinosaurs evolved, which sparked competition with the large amphibians that had previously ruled the freshwater world, respectively mammal-like reptiles on land. 1751:
Recent research indicates that it took much longer for the reestablishment of complex ecosystems with high biodiversity, complex food webs, and specialized animals in a variety of niches, beginning in the mid-Triassic 4 million to 6 million years after the extinction, and not fully proliferated until
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Different studies have come to different conclusions about the amount of oxygen in the atmosphere during different parts of the Mesozoic, with some concluding oxygen levels were lower than the current level (about 21%) throughout the Mesozoic, some concluding they were lower in the Triassic and part
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continued to thrive. Flowering plants, possibly appearing as far back as the Triassic, became truly dominant for the first time. Pterosaurs in the Late Cretaceous declined for poorly understood reasons, though this might be due to tendencies of the fossil record, as their diversity seems to be much
1538:, water acts as a temperature-stabilizing heat reservoir, and land areas near large bodies of water—especially oceans—experience less variation in temperature. Because much of Pangaea's land was distant from its shores, temperatures fluctuated greatly, and the interior probably included expansive 1016:
Following the bloom of the Middle Triassic, the Late Triassic, from 237 to 201 million years ago, featured frequent heat spells and moderate precipitation (10–20 inches per year). The recent warming led to a boom of dinosaurian evolution on land as the continents began to separate from each
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although those approximations have been brought into question with some paleontologists estimating the actual numbers as low as 81%. It is also known as the "Great Dying" because it is considered the largest mass extinction in the Earth's history. The upper boundary of the Mesozoic is set at the
1783:, especially the mouth parts, seems particularly well-suited for flowering plants. However, all major insect mouth parts preceded angiosperms, and insect diversification actually slowed when they arrived, so their anatomy originally must have been suited for some other purpose. 960:
The Early Triassic, about 252 to 247 million years ago, was dominated by deserts in the interior of the Pangaea supercontinent. The Earth had just witnessed a massive die-off in which 95% of all life became extinct, and the most common vertebrate life on land were
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at the top of the food chain. The first true crocodiles evolved, pushing the large amphibians to near extinction. All-in-all, archosaurs rose to rule the world. Meanwhile, the first true mammals evolved, remaining relatively small, but spreading widely; the Jurassic
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Capriolo, Manfredo; Marzoli, Andrea; Aradi, LĂĄszlĂł E.; Callegaro, Sara; Corso, Jacopo Dal; Newton, Robert J.; Mills, Benjamin J. W.; Wignall, Paul B.; Bartoli, Omar; Baker, Don R.; Youbi, Nasrrddine; Remusat, Laurent; Spiess, Richard; SzabĂł, Csaba (7 April 2020).
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The Early Cretaceous spans from 145 to 100 million years ago. The Early Cretaceous saw the expansion of seaways and a decline in diversity of sauropods, stegosaurs, and other high-browsing groups, with sauropods particularly scarce in North America.
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Dinosaurs first appeared in the Mid-Triassic, and became the dominant terrestrial vertebrates in the Late Triassic or Early Jurassic, occupying this position for about 150 or 135 million years until their demise at the end of the Cretaceous.
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dinosaurs. The increase in sea levels opened up the Atlantic seaway, which has grown continually larger until today. The further separation of the continents gave opportunity for the diversification of new dinosaurs.
1683:, but the even temperature gradient allowed them to spread toward the poles throughout the period. By the end of the Cretaceous, angiosperms dominated tree floras in many areas, although some evidence suggests that 1395:
and other volcanic eruptions were poisoning the atmosphere. As this continued, it is thought that a large meteor smashed into earth 66 million years ago, creating the Chicxulub Crater in an event known as the
937:. Towards the Late Cretaceous, large volcanic eruptions are also believed to have contributed to the Cretaceous–Paleogene extinction event. Approximately 50% of all genera became extinct, including all of the non- 2147: 1072:
The Early Jurassic spans from 200 to 175 million years ago. The climate was tropical and much more humid than the Triassic, as a result of the large seas appearing between the land masses. In the oceans,
2238: 2042:"As many systems or combinations of organic forms as are clearly traceable in the stratified crust of the globe, so many corresponding terms (as PalĂŚozoic, Mesozoic, Kainozoic, &c.) may be made, … " 1104:, from the late Jurassic Period about 150 million years ago, was about the size of a chipmunk, and its teeth, forelimbs and back suggest that it dug open the nests of social insects (probably 3434:
Lehrmann, D. J.; Ramezan, J.; Bowring, S.A.; et al. (December 2006). "Timing of recovery from the end-Permian extinction: Geochronologic and biostratigraphic constraints from south China".
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Bulletin 769: The Geologic Time Classification of the United States Geological Survey Compared With Other Classifications, accompanied by the original definitions of era, period and epoch terms
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to ones dominated by endosymbiotic algae with red-algal-derived plastids. This transition is speculated to have been caused by an increasing paucity of many trace metals in the Mesozoic ocean.
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The Triassic ranges roughly from 252 million to 201 million years ago, preceding the Jurassic Period. The period is bracketed between the Permian–Triassic extinction event and the
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support these conclusions, but some evidence suggests the generally dry climate of the Triassic was punctuated by episodes of increased rainfall. The most important humid episodes were the
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Era. Eventually, tropics were restricted to the equator and areas beyond the tropic lines experienced extreme seasonal changes in weather. Dinosaurs still thrived, as new taxa such as
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became relatively large and flightless, adapted to life in the open sea. Metatherians and primitive eutherian also became common and even produced large and specialised genera like
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other (Nyasasaurus from 243 to 210 million years ago, approximately 235–30 ma, some of them separated into Sauropodomorphs, Theropods and Herrerasaurids), as well as the first
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The Jurassic ranges from 200 million years to 145 million years ago and features three major epochs: The Early Jurassic, the Middle Jurassic, and the Late Jurassic.
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into separate landmasses. The climate of the Mesozoic was varied, alternating between warming and cooling periods. Overall, however, the Earth was hotter than it is today.
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forests made up a large portion of the forests. In the oceans, plesiosaurs were quite common, and ichthyosaurs flourished. This epoch was the peak of the reptiles.
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The climatic changes of the late Jurassic and Cretaceous favored further adaptive radiation. The Jurassic was the height of archosaur diversity, and the first
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until after the Cretaceous–Paleogene extinction. Some plant species had distributions that were markedly different from succeeding periods; for example, the
1005:. Ecosystems had recovered from the Permian extinction. Algae, sponge, corals, and crustaceans all had recovered, and new aquatic reptiles evolved, such as 3013:"Oceanic anoxic events and plankton evolution: Biotic response to tectonic forcing during the mid-Cretaceous: OCEANIC ANOXIC EVENTS AND PLANKTON EVOLUTION" 2435:
Capriolo, Manfredo; Mills, Benjamin J. W.; Newton, Robert J.; Corso, Jacobo Dal; Dunhill, Alexander M.; Wignall, Paul B.; Marzoli, Andrea (February 2022).
2678: 3047: 2304: 1041:, and almost all large amphibians became extinct, as well as 34% of marine life, in the Earth's fourth mass extinction event. The cause is debatable; 2903: 2835: 2637: 2698:"Diversity patterns amongst herbivorous dinosaurs and plants during the Cretaceous: implications for hypotheses of dinosaur/angiosperm co-evolution" 1608:
of the Jurassic but higher in the Cretaceous, and some concluding they were higher throughout most or all of the Triassic, Jurassic and Cretaceous.
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Leslie, Andrew B.; Beaulieu, Jeremy; Holman, Garth; Campbell, Christopher S.; Mei, Wenbin; Raubeson, Linda R.; Mathews, Sarah (September 2018).
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The Middle Jurassic spans from 175 to 163 million years ago. During this epoch, dinosaurs flourished as huge herds of sauropods, such as
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Seasons came back into effect and the poles got seasonally colder, but some dinosaurs still inhabited the polar forests year round, such as
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of the late Paleozoic, Mesozoic tectonic deformation was comparatively mild. The sole major Mesozoic orogeny occurred in what is now the
1400:(formerly K-T), the fifth and most recent mass extinction event, in which 75% of life became extinct, including all non-avian dinosaurs. 1314:
The Late Cretaceous spans from 100 to 66 million years ago. The Late Cretaceous featured a cooling trend that would continue in the
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The Middle Triassic, from 247 to 237 million years ago, featured the beginnings of the breakup of Pangaea and the opening of the
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Blomenkemper, Patrick; Bäumer, Robert; Backer, Malte; Abu Hamad, Abdalla; Wang, Jun; Kerp, Hans; Bomfleur, Benjamin (26 March 2021).
1397: 926: 665: 517: 3232: 1695:, a fern order, were skewed to the Northern Hemisphere in the Mesozoic, but are now better represented in the Southern Hemisphere. 392: 2211: 1029:. All this climatic change, however, resulted in a large die-out known as the Triassic–Jurassic extinction event, in which many 3285: 2437:"Anthropogenic-scale CO2 degassing from the Central Atlantic Magmatic Province as a driver of the end-Triassic mass extinction" 950: 1673:
gained a global distribution during the Late Triassic, and represented one of the most common groups of Mesozoic seed plants.
3017: 2122: 1846: 917: 657: 3598: 3123: 3362:"Bennettitalean Leaves From the Permian of Equatorial Pangea—The Early Radiation of an Iconic Mesozoic Gymnosperm Group" 2400: 1345: 1046: 3269: 3207: 3147: 1478:
By the end of the era, the continents had rifted into nearly their present forms, though not their present positions.
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Zhang, Qiong; Bendif, El Mahdi; Zhou, Yu; Nevado, Bruno; Shafiee, Roxana; Rickaby, Rosalind E. M. (31 October 2022).
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Gurung, Khushboo; Field, Katie J.; Batterman, Sarah A.; Poulton, Simon W.; Mills, Benjamin J. W. (28 February 2024).
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Bergman N. M., Lenton T. M., Watson A. J. 2004 COPSE: a new model of biogeochemical cycling over Phanaerozoic time.
17: 3417: 2702: 2656: 2417: 2239:"End-Cretaceous extinction in Antarctica linked to both Deccan volcanism and meteorite impact via climate change" 1887: 1472: 712:
also appeared during the Mesozoic, but would remain small—less than 15 kg (33 lb)—until the Cenozoic.
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Tegner, Christian; Marzoli, Andrea; McDonald, Iain; Youbi, Nasrrddine; LindstrĂśm, Sofie (26 February 2020).
684:. The Mesozoic was a time of significant tectonic, climatic, and evolutionary activity. The supercontinent 2898: 2573:"Platinum-group elements link the end-Triassic mass extinction and the Central Atlantic Magmatic Province" 1194:
The Cretaceous is the longest period of the Mesozoic, but has only two epochs: Early and Late Cretaceous.
3621: 2830: 2441: 2071: 814: 381: 802: 3366: 1834: 1464: 3127: 2436: 2324:"Calibrated Diversity, Tree Topology and the Mother of Mass Extinctions: The Lesson of Temnospondyls" 2033: 1081:
were abundant. On land, dinosaurs and other archosaurs staked their claim as the dominant race, with
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The climate of the Cretaceous is less certain and more widely disputed. Probably, higher levels of
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higher than previously thought. Birds became increasingly common and diversified into a variety of
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appeared in the Early Cretaceous and would rapidly diversify through the end of the era, replacing
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At the dawn of the Mesozoic, ocean plankton communities transitioned from ones dominated by green
3894: 3889: 3122:, Vol. 316 no. 5824 pp. 557–58 . A graph showing the reconstruction from this paper can be found 2328: 3228:, Annu. Rev. Earth Planet. Sci., V, 31, p. 105–34. See the graph near the bottom of the webpage 1659:
first appeared during the Middle Jurassic. This genus is represented today by a single species,
1535: 3524:"Declining metal availability in the Mesozoic seawater reflected in phytoplankton succession" 3175: 2951: 2510: 2388: 2243: 1752:
30 million years after the extinction. Animal life was then dominated by various archosaurs:
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The Late Jurassic spans from 163 to 145 million years ago. During this epoch, the first
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ruled, filling the role of the ichthyosaurs, which, after declining, had disappeared in the
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The Mesozoic Era was originally described as the "secondary" era, following the "primary" (
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309 no. 7, 603–06. A graph showing the reconstructed levels in this paper can be found on
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Phanerozoic concentrations of atmospheric oxygen reconstructed from sedimentary charcoal
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Following the Paleozoic, the Mesozoic extended roughly 186 million years, from
4117: 3992: 3961: 3758: 3545: 3537: 3494: 3486: 3453: 3383: 3324: 3313:"An overview of extant conifer evolution from the perspective of the fossil record" 3089: 3069: 3052: 3026: 2976: 2960: 2920: 2852: 2766: 2711: 2594: 2586: 2535: 2527: 2468: 2458: 2337: 2268: 2260: 2182: 2164: 1893: 1737: 1444: 1308: 1250: 954: 930: 869: 611: 2087: 818:'animal, living being'). In this way, the Mesozoic is comparable to the Cenozoic ( 4217: 4213: 4209: 4086: 3982: 3920: 3815: 3784: 3753: 3421: 3236: 2924: 1676: 1634: 1630: 1115: 1110: 661: 43: 4242: 1669:, an extinct group of gymnosperms with foliage superficially resembling that of 1561:
Sea levels began to rise during the Jurassic, probably caused by an increase in
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of the supercontinent Pangaea, which gradually split into a northern continent,
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along with many other creatures that managed to survive the Permian extinction.
957:", and it is divided into three major epochs: Early, Middle, and Late Triassic. 920:, during which it has been estimated that up to 90-96% of marine species became 4236: 4055: 3925: 3820: 3789: 3541: 3183: 2964: 2590: 2531: 2148:
Proceedings of the National Academy of Sciences of the United States of America
2143:"Estimates of the magnitudes of major marine mass extinctions in earth history" 1866: 1792: 1703: 1573: 1429: 1368: 1360: 1268: 1244: 1182: 1034: 1026: 968: 881: 752: 3590: 3464: 3388: 3361: 4260: 3956: 3946: 3915: 3878: 3810: 3779: 3397: 3221: 3195: 3161: 3139: 3109: 2972: 2178: 1861: 1666: 1661: 1625:
Conifers were the dominant terrestrial plants for most of the Mesozoic, with
1593: 1531: 1495: 1483: 1388: 1320: 1273: 1177: 1136: 1087: 791: 779: 737: 585: 554: 541: 485: 472: 416: 74: 2169: 2066: 859: 594: 4247: 4178: 4028: 3951: 3508: 3490: 3338: 3081: 3048:"Cretaceous oceanic anoxic event 2 triggered by a massive magmatic episode" 2990: 2778: 2725: 2608: 2549: 2282: 2196: 1440: 1421: 1392: 1379: 1354: 1326: 1100: 1094: 1062: 1002: 989: 978: 963: 894: 773: 767: 749: 619: 3585: 3427: 3011:
Leckie, R. Mark; Bralower, Timothy J.; Cashman, Richard (September 2002).
2831:"The case for creation of the North Pacific Ocean during the Mesozoic Era" 1756:, pterosaurs, and aquatic reptiles such as ichthyosaurs, plesiosaurs, and 1710:
were the dominant terrestrial vertebrates throughout much of the Mesozoic.
4173: 4042: 4018: 3863: 3658: 3415:. Encyclopedia of Earth. National council for Science and the Environment 3312: 3146:. Geochim. Cosmochim. Acta 70, 5653–64. See the dotted line in Fig. 1 of 3031: 3012: 1814: 1733: 1601: 1451:
and Siberian cratons to Asia. In contrast, the era featured the dramatic
1373: 1332: 1288: 1282: 1256: 1236: 1212: 1164: 1074: 1006: 994: 835: 790:(1800–1874). "Mesozoic" literally means 'middle life', deriving from the 235: 49: 3073: 2264: 1098:, for example, had adaptations for swimming, digging and catching fish. 907: 4168: 4128: 4071: 3971: 3868: 3742: 3642: 3550: 3167:
Phanerozoic atmospheric oxygen: New results using the GEOCARBSULF model
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enriched layer associated with a major meteorite impact and subsequent
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Butler, R. J.; Barrett, P. M.; Kenrick, P.; Penn, M. G. (March 2009).
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Penny Cyclopaedia of the Society for the Diffusion of Useful Knowledge
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Preto, Nereo; Kustatscher, Evelyn; Wignall, Paul B. (15 April 2010).
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The Cretaceous-Tertiary event and other catastrophes in earth history
1804: 1776: 1730: 1723: 1558:, a few million years before the Triassic–Jurassic extinction event. 1503: 1341: 1277: 1124: 1082: 1078: 1018: 1010: 842: 761: 701: 673: 646: 265: 99: 3144:
GEOCARBSULF: a combined model for Phanerozoic atmospheric O2 and CO2
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had gone extinct in the same event, long-necked plesiosaurs such as
1197: 4143: 4138: 4102: 4002: 3935: 3904: 3799: 3768: 3679: 3653: 3629: 2391:. In Ryder, Graham; Fastovsky, David & Gartner, Stefan (eds.). 1809: 1768: 1757: 1753: 1741: 1722:
of many new lifeforms. In particular, the extinction of the large
1707: 1638: 1584:: temperatures were about the same across the planet, and about 10° 1569:
also increased with the proximity of water, and deserts retreated.
1566: 1555: 1543: 1519: 1491: 1479: 1468: 1460: 1456: 1349: 1315: 1301: 1207: 1038: 1022: 889: 876: 865: 846: 677: 650: 634: 626: 604: 600: 460: 316: 307: 299: 89: 84: 69: 64: 54: 1057: 4157: 4097: 3847: 3684: 3668: 3359: 2506:"Deep CO2 in the end-Triassic Central Atlantic Magmatic Province" 1780: 1715: 1680: 1637:
appeared late in the era but did not become widespread until the
1626: 1585: 1487: 1409: 1172: 1159: 1153: 1146:, filled the fern prairies, chased by many new predators such as 1105: 756: 717: 693: 638: 622: 533: 513: 456: 426: 104: 79: 748:
The phrase "Age of Reptiles" was introduced by the 19th century
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Petersen, Sierra V.; Dutton, Andrea; Lohmann, Kyger C. (2016).
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When life nearly died: the greatest mass extinction of all time
2052:. Washington, D.C.: U.S. Government Printing Office. p. 9. 2040:. Vol. 17. London: Charles Knight and Co. pp. 153–54. 1772: 1655: 1592:
to the deep ocean may also have been disrupted, preventing the
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The Triassic was generally dry, a trend that began in the late
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The current name was proposed in 1840 by the British geologist
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Atmospheric oxygen level and the evolution of insect body size
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Atmospheric oxygen level and the evolution of insect body size
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Atmospheric oxygen level and the evolution of insect body size
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The extinction of nearly all animal species at the end of the
1665:. Modern conifer groups began to radiate during the Jurassic. 984: 3473:"Recovery from the most profound mass extinction of all time" 3274:
by Jon F. Harrison, Alexander Kaiser and John M. VandenBrooks
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by Jon F. Harrison, Alexander Kaiser and John M. VandenBrooks
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by Jon F. Harrison, Alexander Kaiser and John M. VandenBrooks
2502: 1670: 807: 795: 733: 464: 3310: 2947:"Geographic range of plants drives long-term climate change" 868:
Era began. This time frame is separated into three geologic
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Second era of the Phanerozoic Eon: ~252–66 million years ago
2944: 2428: 1947: 1935: 1917: 1908: 1902: 1764: 1688: 1515: 1452: 938: 705: 2570: 2389:"Impact Crises and Mass Extinctions: A Working Hypothesis" 2113:
Benton M J (2005). "Chapter 8: Life's Biggest Challenge".
1837:(2003) , Peter Roach; James Hartmann; Jane Setter (eds.), 2564: 1923: 1596:
of large volumes of organic matter, which was eventually
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A new model for atmospheric oxygen over phanerozoic time
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Proceedings of the Royal Society B: Biological Sciences
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Turgeon, Steven C.; Creaser, Robert A. (17 July 2008).
2899:"Triassic climates – State of the art and perspectives" 2896: 3433: 1580:
are thought to have almost eliminated the north–south
1383:. Still, the dominant mammals were multituberculates, 3521: 3010: 2236: 1992: 1983: 1971: 1965: 1956: 1950: 1941: 1932: 1926: 1914: 1905: 1896: 668:, another mass extinction whose victims included the 641:. The Mesozoic is the middle of the three eras since 2322:
Ruta, Marcello; Benton, Michael J. (November 2008).
2631: 2629: 2627: 2625: 1974: 1959: 1944: 1911: 1899: 1748:, the latter of which subsequently became extinct. 1679:radiated during the early Cretaceous, first in the 1114:was able to glide for short distances, like modern 120: 1272:evolved. Mammals continued to expand their range: 981:reached peak diversity during the early Triassic. 2904:Palaeogeography, Palaeoclimatology, Palaeoecology 2836:Palaeogeography, Palaeoclimatology, Palaeoecology 2672: 2670: 2209: 2155:(42). National Academy of Sciences: E6325–E6334. 1645:The dominant land plant species of the time were 916:The lower boundary of the Mesozoic is set by the 834:) and Paleozoic ('old life') Eras as well as the 4258: 3112:, John M. VandenBrooks and Peter D. Ward, 2007, 2809: 2635: 2622: 2230: 1391:in the south. At the end of the Cretaceous, the 338:An approximate timescale of key Mesozoic events. 3620: 3268:304, 397–437. See the dashed line in Fig. 1 of 2383: 1439:This orogeny was related to the opening of the 1403: 1311:went on to become common in the fossil record. 3045: 2689: 2667: 2654: 2415: 1518:plate during the Cenozoic, giving rise to the 3606: 3206:289, 333–61. See the solid line in Fig. 1 of 2890: 1771:mammals also appeared. Some have argued that 3128:Paleoclimate – The History of Climate Change 2880:. New York: W.H. Freeman and Company, 1999. 3574:, 1983, The Natural History Museum, London. 3304: 2058: 1980: 1920: 819: 3613: 3599: 2676: 2321: 2302: 2112: 1408:Compared to the vigorous convergent plate 1021:. During the Late Triassic, some advanced 614:. It is characterized by the dominance of 3549: 3498: 3387: 3328: 3030: 2980: 2715: 2598: 2539: 2472: 2462: 2341: 2272: 2186: 2168: 1841:, Cambridge: Cambridge University Press, 1740:empty. Some were filled by the surviving 3283: 3277: 2747:Becker, Luann (2002). "Repeated Blows". 2045: 2031: 1702: 1620: 1196: 1158: 1056: 983: 3471:Sahney, S. & Benton, M. J. (2008). 2137: 1588:higher than today. The circulation of 1340:dominated the food web. In the oceans, 1260:. Pterosaurs got larger as genera like 1108:, as ants had not yet appeared) ; 664:in Earth's history, and ended with the 14: 4259: 2828: 2746: 2131: 1880:There are several ways of pronouncing 708:appeared in the Cretaceous. The first 336: 3594: 3018:Paleoceanography and Paleoclimatology 1833: 1033:(excluding pterosaurs, dinosaurs and 927:Cretaceous–Paleogene extinction event 666:Cretaceous–Paleogene extinction event 3247:Glasspool, I.J., Scott, A.C., 2010, 2810:Elizabeth Howell (3 February 2015). 2636:Carol Marie Tang (7 February 2024). 2210:Gradstein F, Ogg J, Smith A (2005). 1653:. The earliest members of the genus 1222:Some island-hopping dinosaurs, like 4212:= kiloannum (thousands years ago); 3586:Mesozoic (chronostratigraphy scale) 2364: 2079: 1367:forms. Though mostly small, marine 852: 24: 4216:= megaannum (millions years ago); 2064: 1687:was still dominated by cycads and 1346:Cenomanian-Turonian boundary event 1047:Central Atlantic magmatic province 951:Triassic–Jurassic extinction event 340:Axis scale: millions of years ago. 25: 4283: 4220:= gigaannum (billions years ago). 3579: 2771:10.1038/scientificamerican0302-76 2395:. Geological Society of America. 2387:& Haggerty, Bruce M. (1996). 1779:with angiosperms, because insect 918:Permian–Triassic extinction event 740:as the dominant group of plants. 696:appeared in the Jurassic, having 658:Permian–Triassic extinction event 656:The era began in the wake of the 444:First appearance of the Conodont 4241: 4230: 3288:. fossilnews.com. Archived from 2717:10.1111/j.1420-9101.2008.01680.x 2343:10.1111/j.1475-4983.2008.00808.x 2085: 1892: 1049:is cited as one possible cause. 368:Age of Reptiles, Age of Conifers 47: 3515: 3404: 3353: 3258: 3241: 3215: 3189: 3155: 3133: 3103: 3039: 3004: 2938: 2870: 2822: 2803: 2785: 2740: 2703:Journal of Evolutionary Biology 2648: 2496: 2464:10.1016/j.gloplacha.2021.103731 2409: 2377: 2358: 2315: 2296: 2117:. London: Thames & Hudson. 1467:that characterizes most of the 3226:Phanerozoic atmospheric oxygen 2303:Alan Logan (31 January 2024). 2216:. Cambridge University Press. 2203: 2106: 2022: 1874: 1854: 1839:English Pronouncing Dictionary 1827: 755:who viewed it as dominated by 13: 1: 3659:Pleistocene (11.7 ka–2.58 Ma) 2046:Wilmarth, Mary Grace (1925). 1820: 1786: 1471:coastline (such as along the 1189: 2925:10.1016/j.palaeo.2010.03.015 2857:10.1016/0031-0182(75)90015-2 1459:, and a southern continent, 1404:Paleogeography and tectonics 808: 796: 686:Pangaea began to break apart 7: 3622:Geological history of Earth 2442:Global and Planetary Change 2072:Online Etymology Dictionary 1798: 1629:becoming widespread in the 1052: 944: 872:. From oldest to youngest: 337: 230: 10: 4288: 3895:Mississippian (323–359 Ma) 3890:Pennsylvanian (299–323 Ma) 3654:Holocene (present–11.7 ka) 3542:10.1038/s41561-022-01053-7 3367:Frontiers in Earth Science 3317:American Journal of Botany 2965:10.1038/s41467-024-46105-1 2829:Hughes, T. (August 1975). 2591:10.1038/s41598-020-60483-8 2532:10.1038/s41467-020-15325-6 2213:A Geologic Time Scale 2004 1525: 1514:, which collided with the 1465:passive continental margin 882:251.902 to 201.4 813: 801: 4207: 4192: 4179:Paleoarchean (3.2–3.6 Ga) 4156: 4116: 4085: 4054: 4041: 4029:Terreneuvian (521–539 Ma) 4001: 3970: 3934: 3903: 3877: 3846: 3833: 3798: 3767: 3741: 3728: 3693: 3667: 3641: 3628: 3389:10.3389/feart.2021.652699 2094:. EncyclopĂŚdia Britannica 1867:Dictionary.com Unabridged 743: 570: 524: 510:Upper boundary definition 509: 501: 452: 441:Lower boundary definition 440: 432: 422: 412: 407: 399: 387: 377: 372: 364: 356: 351: 118: 113: 39: 34: 4174:Mesoarchean (2.8–3.2 Ga) 4019:Miaolingian (497–509 Ma) 3864:Guadalupian (260–272 Ma) 3716:Paleocene (56.0–66.0 Ma) 3706:Oligocene (23.0–33.9 Ma) 3572:British Mesozoic Fossils 2797:University of California 1698: 1616: 649:, the Mesozoic, and the 123: 42:251.902 Âą 0.024 – 66.0 4169:Neoarchean (2.5–2.8 Ga) 4134:Orosirian (1.8–2.05 Ga) 4129:Statherian (1.6–1.8 Ga) 4072:Cryogenian (635–720 Ma) 3962:Llandovery (433–444 Ma) 3869:Cisuralian (272–299 Ma) 3680:Pliocene (2.59–5.33 Ma) 3420:9 November 2011 at the 3410:C.Michael Hogan. 2010. 3284:Balducci, Stan (2000). 2170:10.1073/pnas.1613094113 2092:EncyclopĂŚdia Britannica 2032:Phillips, John (1840). 1718:Period allowed for the 1611: 1546:and evaporites such as 1276:produced fairly large, 1025:gave rise to the first 860:251.902 to 66 206:−100 — 196:−120 — 186:−140 — 176:−160 — 166:−180 — 156:−200 — 146:−220 — 136:−240 — 126:−260 — 4139:Rhyacian (2.05–2.3 Ga) 4108:Calymmian (1.4–1.6 Ga) 4067:Ediacaran (539–635 Ma) 4014:Furongian (485–497 Ma) 3859:Lopingian (252–260 Ma) 3685:Miocene (5.33–23.0 Ma) 3491:10.1098/rspb.2007.1370 3198:, Canfield D. E. 1989 2812:"K-T Extinction event" 1711: 1642: 1536:specific heat capacity 1216: 1168: 1066: 1043:flood basalt eruptions 998: 895:201.4 to 145 838:('earlier life') Eon. 226:−60 — 216:−80 — 4144:Siderian (2.3–2.5 Ga) 4103:Ectasian (1.2–1.4 Ga) 4024:Series 2 (509–521 Ma) 3711:Eocene (33.9–56.0 Ma) 3235:27 April 2013 at the 3120:Science 27 April 2007 2952:Nature Communications 2511:Nature Communications 2244:Nature Communications 1706: 1624: 1552:Carnian Pluvial Event 1296:began to expand into 1280:-like predators like 1200: 1181:, evolved from small 1162: 1060: 987: 845:), and preceding the 592:, lasting from about 518:K-Pg extinction event 4184:Eoarchean (3.6–4 Ga) 4077:Tonian (720 Ma–1 Ga) 3957:Wenlock (427–433 Ma) 3947:Pridoli (419–423 Ma) 3115:Oxygen and Evolution 3032:10.1029/2001PA000623 2878:Earth System History 2655:Enchanted Learning. 2418:"Late Triassic life" 2416:Enchanted Learning. 1582:temperature gradient 1432:in Siberia, and the 706:true toothless birds 643:complex life evolved 486:31.0798°N 119.7058°E 4239: • 4228: • 4226:Geologic time scale 3988:Middle (458–470 Ma) 3952:Ludlow (423–427 Ma) 3921:Middle (383–393 Ma) 3816:Middle (237–247 Ma) 3785:Middle (164–174 Ma) 3450:2006Geo....34.1053L 3380:2021FrEaS...9..162B 3164:, Robert A., 2009, 3126:, from the webpage 3074:10.1038/nature07076 3066:2008Natur.454..323T 2917:2010PPP...290....1P 2876:Stanley, Steven M. 2849:1975PPP....18....1H 2763:2002SciAm.286c..76B 2750:Scientific American 2524:2020NatCo..11.1670C 2455:2022GPC...20903731C 2385:Rampino, Michael R. 2265:10.1038/ncomms12079 2257:2016NatCo...712079P 2161:2016PNAS..113E6325S 2086:Tang, Carol Marie. 1512:Indian subcontinent 1463:. This created the 1231:Carcharodontosaurus 1077:, ichthyosaurs and 908:145 to 66 670:non-avian dinosaurs 595:252 to 66 571:Upper GSSP ratified 551: /  525:Upper boundary GSSP 502:Lower GSSP ratified 482: /  453:Lower boundary GSSP 433:Time span formality 4237:Geology portal 4098:Stenian (1–1.2 Ga) 3993:Early (470–485 Ma) 3926:Early (393–419 Ma) 3821:Early (247–252 Ma) 3790:Early (174–201 Ma) 3759:Early (100–145 Ma) 3754:Late (66.0–100 Ma) 3292:on 23 January 2013 2661:Enchanted Learning 2578:Scientific Reports 2422:Enchanted Learning 2141:(3 October 2016). 2139:Stanley, Steven M. 2034:"PalĂŚozoic series" 1712: 1643: 1563:seafloor spreading 1225:Eustreptospondylus 1217: 1169: 1067: 999: 590:geological history 555:36.1537°N 8.6486°E 423:Stratigraphic unit 413:Chronological unit 400:Time scale(s) used 4254: 4253: 4152: 4151: 4118:Paleoproterozoic 4037: 4036: 3983:Late (444–458 Ma) 3916:Late (359–383 Ma) 3829: 3828: 3811:Late (201–237 Ma) 3780:Late (145–164 Ma) 3724: 3723: 3645:(present–2.58 Ma) 3633:(present–66.0 Ma) 3529:Nature Geoscience 3458:10.1130/G22827A.1 3330:10.1002/ajb2.1143 3286:"Mesozoic Plants" 3253:Nature Geoscience 3060:(7202): 323–326. 3025:(3): 13–1–13–29. 2657:"Middle Jurassic" 2367:"Middle Triassic" 2305:"Triassic Period" 2124:978-0-500-28573-2 2065:Harper, Douglas. 1848:978-3-12-539683-8 1738:ecological niches 1434:Khingan Mountains 1418:Innuitian orogeny 1410:mountain-building 1387:in the north and 1309:multituberculates 1120:multituberculates 935:YucatĂĄn Peninsula 910:million years ago 903:Cretaceous Period 897:million years ago 884:million years ago 862:million years ago 700:from a branch of 633:climate; and the 599:, comprising the 597:million years ago 578: 577: 491:31.0798; 119.7058 373:Usage information 346: 345: 16:(Redirected from 4279: 4248:World portal 4246: 4245: 4235: 4234: 4197: 4161: 4121: 4090: 4087:Mesoproterozoic 4059: 4052: 4051: 4047: 4006: 3975: 3939: 3908: 3882: 3851: 3844: 3843: 3839: 3803: 3772: 3746: 3739: 3738: 3734: 3698: 3672: 3646: 3639: 3638: 3634: 3615: 3608: 3601: 3592: 3591: 3563: 3562: 3560: 3558: 3553: 3519: 3513: 3512: 3502: 3485:(1636): 759–65. 3468: 3462: 3461: 3431: 3425: 3424:. Washington, DC 3408: 3402: 3401: 3391: 3357: 3351: 3350: 3332: 3323:(9): 1531–1544. 3308: 3302: 3301: 3299: 3297: 3281: 3275: 3262: 3256: 3245: 3239: 3224:, et al., 2003, 3219: 3213: 3193: 3187: 3186:and Gary Kaiser. 3180:Living Dinosaurs 3159: 3153: 3137: 3131: 3107: 3101: 3100: 3098: 3096: 3043: 3037: 3036: 3034: 3008: 3002: 3001: 2999: 2997: 2984: 2942: 2936: 2935: 2933: 2931: 2894: 2888: 2874: 2868: 2867: 2865: 2863: 2826: 2820: 2819: 2807: 2801: 2800: 2789: 2783: 2782: 2744: 2738: 2737: 2719: 2693: 2687: 2686: 2677:Carl Fred Koch. 2674: 2665: 2664: 2652: 2646: 2645: 2633: 2620: 2619: 2617: 2615: 2602: 2568: 2562: 2561: 2543: 2500: 2494: 2493: 2491: 2489: 2476: 2466: 2432: 2426: 2425: 2413: 2407: 2406: 2381: 2375: 2374: 2362: 2356: 2355: 2345: 2336:(6): 1261–1288. 2319: 2313: 2312: 2300: 2294: 2293: 2291: 2289: 2276: 2234: 2228: 2227: 2207: 2201: 2200: 2190: 2172: 2135: 2129: 2128: 2110: 2104: 2103: 2101: 2099: 2083: 2077: 2076: 2062: 2056: 2053: 2041: 2026: 2020: 2015: 2011: 2007: 2003: 1999: 1995: 1990: 1989: 1986: 1985: 1982: 1979: 1976: 1973: 1968: 1967: 1964: 1961: 1958: 1953: 1952: 1949: 1946: 1943: 1938: 1937: 1934: 1929: 1928: 1925: 1922: 1919: 1916: 1913: 1910: 1907: 1904: 1901: 1898: 1891: 1878: 1872: 1871: 1858: 1852: 1851: 1831: 1793:archaeplastidans 1677:Flowering plants 1635:Flowering plants 1251:Muttaburrasaurus 1241: 1116:flying squirrels 931:Chicxulub Crater 911: 898: 885: 863: 853:Geologic periods 833: 830: 827: 824: 821: 817: 811: 805: 799: 714:Flowering plants 704:dinosaurs, then 598: 566: 565: 563: 562: 561: 556: 552: 549: 548: 547: 544: 528:El Kef Section, 497: 496: 494: 493: 492: 487: 483: 480: 479: 478: 475: 446:Hindeodus parvus 310: 293: 259: 227: 222: 217: 212: 207: 202: 197: 192: 187: 182: 177: 172: 167: 162: 157: 152: 147: 142: 137: 132: 127: 121: 109: 46: 32: 31: 21: 18:Secondary Period 4287: 4286: 4282: 4281: 4280: 4278: 4277: 4276: 4267:Geological eras 4257: 4256: 4255: 4250: 4240: 4229: 4221: 4203: 4195: 4188: 4159: 4148: 4119: 4112: 4088: 4081: 4057: 4056:Neoproterozoic 4046:(539 Ma–2.5 Ga) 4045: 4044: 4043:Proterozoic Eon 4033: 4004: 3997: 3973: 3966: 3937: 3930: 3906: 3899: 3880: 3873: 3849: 3837: 3836: 3825: 3801: 3794: 3770: 3763: 3744: 3732: 3731: 3720: 3696: 3689: 3670: 3663: 3644: 3632: 3631: 3624: 3619: 3582: 3577: 3567: 3566: 3556: 3554: 3520: 3516: 3469: 3465: 3444:(12): 1053–56. 3432: 3428: 3422:Wayback Machine 3409: 3405: 3358: 3354: 3309: 3305: 3295: 3293: 3282: 3278: 3263: 3259: 3246: 3242: 3237:Wayback Machine 3230:Phanerozoic Eon 3220: 3216: 3194: 3190: 3160: 3156: 3138: 3134: 3108: 3104: 3094: 3092: 3044: 3040: 3009: 3005: 2995: 2993: 2943: 2939: 2929: 2927: 2895: 2891: 2875: 2871: 2861: 2859: 2827: 2823: 2808: 2804: 2791: 2790: 2786: 2745: 2741: 2694: 2690: 2675: 2668: 2653: 2649: 2634: 2623: 2613: 2611: 2569: 2565: 2501: 2497: 2487: 2485: 2433: 2429: 2414: 2410: 2403: 2382: 2378: 2363: 2359: 2320: 2316: 2301: 2297: 2287: 2285: 2235: 2231: 2224: 2208: 2204: 2136: 2132: 2125: 2111: 2107: 2097: 2095: 2084: 2080: 2063: 2059: 2027: 2023: 2013: 2009: 2005: 2001: 1997: 1993: 1970: 1955: 1940: 1931: 1895: 1886: 1885: 1879: 1875: 1860: 1859: 1855: 1849: 1832: 1828: 1823: 1815:Phanerozoic Eon 1801: 1789: 1775:diversified in 1701: 1631:Late Cretaceous 1619: 1614: 1554:and one in the 1528: 1473:U.S. East Coast 1430:Cherskiy Ranges 1416:, creating the 1406: 1398:K-Pg Extinction 1221: 1192: 1131: 1111:Volaticotherium 1055: 1035:crocodylomorphs 969:labyrinthodonts 947: 906: 893: 890:Jurassic Period 880: 877:Triassic Period 858: 855: 831: 828: 825: 822: 806:'between') and 746: 662:mass extinction 593: 560:36.1537; 8.6486 559: 557: 553: 550: 545: 542: 540: 538: 537: 536: 490: 488: 484: 481: 476: 473: 471: 469: 468: 467: 347: 342: 341: 339: 332: 331: 327: 326: 320: 319: 313: 312: 308: 304: 303: 295: 294: 289: 287: 285: 283: 281: 279: 277: 273: 270: 269: 261: 260: 255: 253: 251: 249: 247: 245: 243: 241: 239: 237: 233: 228: 225: 223: 220: 218: 215: 213: 210: 208: 205: 203: 200: 198: 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3748: 3736: 3726: 3725: 3722: 3721: 3719: 3718: 3713: 3708: 3702: 3700: 3697:(23.0–66.0 Ma) 3691: 3690: 3688: 3687: 3682: 3676: 3674: 3671:(2.58–23.0 Ma) 3665: 3664: 3662: 3661: 3656: 3650: 3648: 3636: 3626: 3625: 3618: 3617: 3610: 3603: 3595: 3589: 3588: 3581: 3580:External links 3578: 3576: 3575: 3568: 3565: 3564: 3536:(1): 932–941. 3514: 3463: 3426: 3403: 3352: 3303: 3276: 3257: 3240: 3214: 3188: 3154: 3132: 3102: 3038: 3003: 2937: 2889: 2869: 2821: 2816:Universe Today 2802: 2784: 2739: 2710:(3): 446–459. 2688: 2683:britannica.com 2666: 2647: 2642:britannica.com 2638:"Jurassic Era" 2621: 2563: 2495: 2427: 2408: 2402:978-0813723075 2401: 2376: 2357: 2314: 2309:britannica.com 2295: 2229: 2222: 2202: 2130: 2123: 2105: 2088:"Mesozoic Era" 2078: 2057: 2055: 2054: 2043: 2021: 1873: 1870:(Online). n.d. 1853: 1847: 1825: 1824: 1822: 1819: 1818: 1817: 1812: 1807: 1800: 1797: 1788: 1785: 1700: 1697: 1618: 1615: 1613: 1610: 1574:carbon dioxide 1527: 1524: 1436:in Manchuria. 1405: 1402: 1389:gondwanatheres 1369:hesperornithes 1274:eutriconodonts 1269:Ornithocheirus 1245:Leaellynasaura 1191: 1188: 1183:coelurosaurian 1054: 1051: 1027:Mammaliaformes 953:, two of the " 946: 943: 914: 913: 900: 887: 854: 851: 753:Gideon Mantell 750:paleontologist 745: 742: 660:, the largest 625:, such as the 576: 575: 572: 568: 567: 526: 522: 521: 511: 507: 506: 503: 499: 498: 454: 450: 449: 442: 438: 437: 434: 430: 429: 424: 420: 419: 414: 410: 409: 405: 404: 403:ICS Time Scale 401: 397: 396: 389: 388:Regional usage 385: 384: 379: 378:Celestial body 375: 374: 370: 369: 366: 362: 361: 358: 357:Name formality 354: 353: 349: 348: 344: 343: 334: 333: 329: 328: 322: 321: 315: 314: 306: 305: 297: 296: 272: 271: 263: 262: 232: 231: 229: 224: 219: 214: 209: 204: 199: 194: 189: 184: 179: 174: 169: 164: 159: 154: 149: 144: 139: 134: 129: 124: 119: 116: 115: 111: 110: 103: 98: 93: 88: 83: 78: 73: 68: 63: 58: 53: 48: 37: 36: 26: 9: 6: 4: 3: 2: 4284: 4273: 4270: 4268: 4265: 4264: 4262: 4249: 4244: 4238: 4233: 4227: 4224: 4219: 4215: 4211: 4206: 4200: 4198: 4191: 4185: 4182: 4180: 4177: 4175: 4172: 4170: 4167: 4166: 4164: 4162: 4155: 4145: 4142: 4140: 4137: 4135: 4132: 4130: 4127: 4126: 4124: 4122: 4115: 4109: 4106: 4104: 4101: 4099: 4096: 4095: 4093: 4091: 4084: 4078: 4075: 4073: 4070: 4068: 4065: 4064: 4062: 4060: 4058:(539 Ma–1 Ga) 4053: 4050: 4048: 4040: 4030: 4027: 4025: 4022: 4020: 4017: 4015: 4012: 4011: 4009: 4007: 4000: 3994: 3991: 3989: 3986: 3984: 3981: 3980: 3978: 3976: 3969: 3963: 3960: 3958: 3955: 3953: 3950: 3948: 3945: 3944: 3942: 3940: 3933: 3927: 3924: 3922: 3919: 3917: 3914: 3913: 3911: 3909: 3902: 3896: 3893: 3891: 3888: 3887: 3885: 3883: 3876: 3870: 3867: 3865: 3862: 3860: 3857: 3856: 3854: 3852: 3845: 3842: 3840: 3835:Paleozoic Era 3832: 3822: 3819: 3817: 3814: 3812: 3809: 3808: 3806: 3804: 3797: 3791: 3788: 3786: 3783: 3781: 3778: 3777: 3775: 3773: 3766: 3760: 3757: 3755: 3752: 3751: 3749: 3747: 3745:(66.0–145 Ma) 3740: 3737: 3735: 3733:(66.0–252 Ma) 3727: 3717: 3714: 3712: 3709: 3707: 3704: 3703: 3701: 3699: 3692: 3686: 3683: 3681: 3678: 3677: 3675: 3673: 3666: 3660: 3657: 3655: 3652: 3651: 3649: 3647: 3640: 3637: 3635: 3627: 3623: 3616: 3611: 3609: 3604: 3602: 3597: 3596: 3593: 3587: 3584: 3583: 3573: 3570: 3569: 3552: 3547: 3543: 3539: 3535: 3531: 3530: 3525: 3518: 3510: 3506: 3501: 3496: 3492: 3488: 3484: 3480: 3479: 3474: 3467: 3459: 3455: 3451: 3447: 3443: 3439: 3438: 3430: 3423: 3419: 3416: 3414: 3407: 3399: 3395: 3390: 3385: 3381: 3377: 3373: 3369: 3368: 3363: 3356: 3348: 3344: 3340: 3336: 3331: 3326: 3322: 3318: 3314: 3307: 3291: 3287: 3280: 3273: 3272: 3267: 3261: 3254: 3250: 3244: 3238: 3234: 3231: 3227: 3223: 3218: 3211: 3210: 3205: 3201: 3197: 3192: 3185: 3181: 3177: 3173: 3169: 3168: 3163: 3158: 3151: 3150: 3145: 3141: 3136: 3129: 3125: 3121: 3117: 3116: 3111: 3110:Robert Berner 3106: 3091: 3087: 3083: 3079: 3075: 3071: 3067: 3063: 3059: 3055: 3054: 3049: 3042: 3033: 3028: 3024: 3020: 3019: 3014: 3007: 2992: 2988: 2983: 2978: 2974: 2970: 2966: 2962: 2958: 2954: 2953: 2948: 2941: 2926: 2922: 2918: 2914: 2911:(1–4): 1–10. 2910: 2906: 2905: 2900: 2893: 2887: 2886:0-7167-2882-6 2883: 2879: 2873: 2858: 2854: 2850: 2846: 2842: 2838: 2837: 2832: 2825: 2817: 2813: 2806: 2798: 2794: 2788: 2780: 2776: 2772: 2768: 2764: 2760: 2756: 2752: 2751: 2743: 2735: 2731: 2727: 2723: 2718: 2713: 2709: 2705: 2704: 2699: 2692: 2684: 2680: 2673: 2671: 2662: 2658: 2651: 2643: 2639: 2632: 2630: 2628: 2626: 2610: 2606: 2601: 2596: 2592: 2588: 2584: 2580: 2579: 2574: 2567: 2559: 2555: 2551: 2547: 2542: 2537: 2533: 2529: 2525: 2521: 2517: 2513: 2512: 2507: 2499: 2484: 2480: 2475: 2470: 2465: 2460: 2456: 2452: 2448: 2444: 2443: 2438: 2431: 2423: 2419: 2412: 2404: 2398: 2394: 2390: 2386: 2380: 2372: 2368: 2361: 2353: 2349: 2344: 2339: 2335: 2331: 2330: 2329:Palaeontology 2325: 2318: 2310: 2306: 2299: 2284: 2280: 2275: 2270: 2266: 2262: 2258: 2254: 2250: 2246: 2245: 2240: 2233: 2225: 2223:9780511536045 2219: 2215: 2214: 2206: 2198: 2194: 2189: 2184: 2180: 2176: 2171: 2166: 2162: 2158: 2154: 2150: 2149: 2144: 2140: 2134: 2126: 2120: 2116: 2109: 2093: 2089: 2082: 2074: 2073: 2068: 2061: 2051: 2050: 2044: 2039: 2035: 2030: 2029: 2025: 2018: 2017: 1988: 1889: 1883: 1877: 1869: 1868: 1863: 1857: 1850: 1844: 1840: 1836: 1835:Jones, Daniel 1830: 1826: 1816: 1813: 1811: 1808: 1806: 1805:Paleozoic Era 1803: 1802: 1796: 1794: 1784: 1782: 1778: 1774: 1770: 1766: 1761: 1759: 1755: 1749: 1747: 1743: 1739: 1735: 1734:gorgonopsians 1732: 1728: 1725: 1721: 1717: 1709: 1705: 1696: 1694: 1690: 1686: 1682: 1678: 1674: 1672: 1668: 1667:Bennettitales 1664: 1663: 1662:Ginkgo biloba 1658: 1657: 1652: 1648: 1640: 1636: 1632: 1628: 1623: 1609: 1605: 1603: 1599: 1595: 1594:decomposition 1591: 1587: 1583: 1579: 1575: 1570: 1568: 1564: 1559: 1557: 1553: 1549: 1545: 1541: 1537: 1533: 1532:Carboniferous 1523: 1521: 1517: 1513: 1509: 1505: 1501: 1497: 1496:South America 1493: 1489: 1485: 1484:North America 1481: 1476: 1474: 1470: 1466: 1462: 1458: 1454: 1450: 1446: 1442: 1437: 1435: 1431: 1427: 1423: 1419: 1415: 1411: 1401: 1399: 1394: 1390: 1386: 1382: 1381: 1376: 1375: 1370: 1366: 1362: 1361:enantiornithe 1357: 1356: 1351: 1347: 1343: 1339: 1335: 1334: 1329: 1328: 1323: 1322: 1321:Tyrannosaurus 1317: 1312: 1310: 1307: 1303: 1299: 1295: 1291: 1290: 1285: 1284: 1279: 1275: 1271: 1270: 1265: 1264: 1259: 1258: 1253: 1252: 1247: 1246: 1239: 1238: 1233: 1232: 1227: 1226: 1215: 1214: 1209: 1205: 1204: 1199: 1195: 1187: 1184: 1180: 1179: 1178:Archaeopteryx 1174: 1167: 1166: 1161: 1157: 1155: 1151: 1150: 1145: 1144: 1139: 1138: 1137:Brachiosaurus 1132: 1129: 1127: 1126: 1121: 1117: 1113: 1112: 1107: 1103: 1102: 1097: 1096: 1090: 1089: 1088:Dilophosaurus 1084: 1080: 1076: 1070: 1065: 1064: 1059: 1050: 1048: 1044: 1040: 1036: 1032: 1028: 1024: 1020: 1014: 1012: 1008: 1004: 996: 992: 991: 986: 982: 980: 979:Temnospondyls 976: 975: 970: 966: 965: 958: 956: 952: 942: 940: 936: 932: 928: 923: 919: 909: 904: 901: 896: 891: 888: 883: 878: 875: 874: 873: 871: 867: 861: 850: 848: 844: 839: 837: 816: 810: 804: 798: 793: 789: 788:John Phillips 784: 782: 781: 780:Pterodactylus 776: 775: 770: 769: 764: 763: 758: 754: 751: 741: 739: 738:bennettitales 735: 731: 727: 723: 719: 715: 711: 707: 703: 699: 695: 694:Archaic birds 689: 687: 683: 679: 675: 671: 667: 663: 659: 654: 652: 648: 644: 640: 636: 632: 628: 624: 621: 617: 613: 610: 606: 602: 596: 591: 587: 583: 573: 569: 564: 535: 531: 527: 523: 519: 515: 512: 508: 504: 500: 495: 466: 462: 458: 455: 451: 447: 443: 439: 435: 431: 428: 425: 421: 418: 415: 411: 406: 402: 398: 394: 390: 386: 383: 380: 376: 371: 367: 363: 359: 355: 350: 335: 325: 318: 311: 302: 301: 292: 291: 268: 267: 258: 257: 122: 117: 112: 106: 101: 96: 91: 86: 81: 76: 71: 66: 61: 56: 51: 45: 38: 33: 30: 19: 4222: 4158:Archean Eon 4120:(1.6–2.5 Ga) 4005:(485–539 Ma) 3974:(444–485 Ma) 3938:(419–444 Ma) 3907:(359–419 Ma) 3881:(299–359 Ma) 3850:(252–299 Ma) 3838:(252–539 Ma) 3802:(201–252 Ma) 3771:(145–201 Ma) 3730:Mesozoic Era 3729: 3630:Cenozoic Era 3571: 3555:. Retrieved 3533: 3527: 3517: 3482: 3476: 3466: 3441: 3435: 3429: 3412: 3406: 3371: 3365: 3355: 3320: 3316: 3306: 3294:. Retrieved 3290:the original 3279: 3270: 3265: 3260: 3248: 3243: 3225: 3217: 3208: 3203: 3199: 3196:Berner R. A. 3191: 3179: 3178:of the book 3171: 3166: 3157: 3148: 3143: 3140:Berner R. A. 3135: 3119: 3114: 3105: 3093:. Retrieved 3057: 3051: 3041: 3022: 3016: 3006: 2994:. Retrieved 2956: 2950: 2940: 2928:. Retrieved 2908: 2902: 2892: 2877: 2872: 2860:. Retrieved 2840: 2834: 2824: 2815: 2805: 2796: 2793:"Cretaceous" 2787: 2757:(3): 76–83. 2754: 2748: 2742: 2707: 2701: 2691: 2682: 2679:"Cretaceous" 2660: 2650: 2641: 2612:. Retrieved 2582: 2576: 2566: 2515: 2509: 2498: 2486:. Retrieved 2446: 2440: 2430: 2421: 2411: 2392: 2379: 2370: 2360: 2333: 2327: 2317: 2308: 2298: 2286:. Retrieved 2248: 2242: 2232: 2212: 2205: 2152: 2146: 2133: 2114: 2108: 2096:. Retrieved 2091: 2081: 2070: 2060: 2048: 2037: 2024: 1884:, including 1881: 1876: 1865: 1856: 1838: 1829: 1810:Cenozoic Era 1790: 1762: 1750: 1713: 1675: 1660: 1654: 1644: 1606: 1571: 1560: 1529: 1477: 1441:Arctic Ocean 1438: 1422:Brooks Range 1407: 1393:Deccan traps 1380:Schowalteria 1378: 1372: 1355:Elasmosaurus 1353: 1331: 1327:Ankylosaurus 1325: 1319: 1313: 1298:metatherians 1287: 1281: 1267: 1261: 1255: 1249: 1243: 1235: 1229: 1223: 1218: 1211: 1201: 1193: 1176: 1170: 1163: 1147: 1141: 1135: 1133: 1130: 1123: 1118:. The first 1109: 1101:Fruitafossor 1099: 1095:Castorocauda 1093: 1086: 1071: 1068: 1063:Sericipterus 1061: 1015: 1007:ichthyosaurs 1003:Tethys Ocean 1000: 990:Plateosaurus 988: 972: 964:Lystrosaurus 962: 959: 948: 915: 856: 840: 785: 778: 774:Plesiosaurus 772: 768:Megalosaurus 766: 760: 747: 725: 690: 655: 637:break-up of 620:archosaurian 582:Mesozoic Era 581: 579: 445: 298: 275: 274: 264: 234: 35:Mesozoic Era 29: 4194:Hadean Eon 3972:Ordovician 3743:Cretaceous 3643:Quaternary 3551:10451/55860 3266:Am. J. Sci. 3255:, 3, 627–30 3204:Am. J. Sci. 3184:Gareth Dyke 3172:Am. J. Sci. 2843:(1): 1–43. 2585:(1): 3482. 2518:(1): 1670. 2474:10852/91551 2371:palaeos.com 2098:5 September 1746:dicynodonts 1736:left those 1731:carnivorous 1727:pareiasaurs 1724:herbivorous 1651:angiosperms 1647:gymnosperms 1602:black shale 1542:. Abundant 1494:split into 1449:North China 1426:Verkhoyansk 1385:cimolodonts 1374:Didelphodon 1365:ornithurine 1333:Triceratops 1289:Gobiconodon 1283:Repenomamus 1257:Koolasuchus 1237:Spinosaurus 1213:Xiphactinus 1165:Stegosaurus 1075:plesiosaurs 995:prosauropod 941:dinosaurs. 836:Proterozoic 722:gymnosperms 682:plesiosaurs 616:gymnosperms 588:of Earth's 558: / 489: / 477:119°42′21″E 365:Nickname(s) 4261:Categories 4196:(4–4.6 Ga) 4160:(2.5–4 Ga) 4089:(1–1.6 Ga) 3695:Paleogene 3374:: 652699. 2449:: 103731. 2067:"Mesozoic" 1862:"Mesozoic" 1821:References 1787:Microbiota 1693:Schizeales 1578:atmosphere 1508:Antarctica 1338:hadrosaurs 1306:cimolodont 1302:eutherians 1210:) hunting 1203:Tylosaurus 1190:Cretaceous 1149:Allosaurus 1143:Diplodocus 1031:archosaurs 1019:pterosaurs 1011:nothosaurs 974:Euparkeria 730:ginkgoales 726:sensu lato 720:and other 674:pterosaurs 631:greenhouse 609:Cretaceous 543:36°09′13″N 474:31°04′47″N 408:Definition 324:Cretaceous 114:Chronology 4223:See also: 4003:Cambrian 3936:Silurian 3905:Devonian 3800:Triassic 3769:Jurassic 3398:2296-6463 3222:Berner, R 2973:2041-1723 2558:215404768 2483:245530815 2365:Rubidge. 2251:: 12079. 2179:1091-6490 1777:symbiosis 1769:eutherian 1758:mosasaurs 1754:dinosaurs 1742:cynodonts 1720:radiation 1708:Dinosaurs 1598:deposited 1520:Himalayas 1504:Australia 1475:) today. 1350:pliosaurs 1348:. Though 1342:mosasaurs 1278:wolverine 1128:evolved. 1125:Rugosodon 1083:theropods 1079:ammonites 1039:synapsids 1023:cynodonts 864:when the 843:Paleozoic 762:Iguanodon 678:mosasaurs 647:Paleozoic 627:dinosaurs 546:8°38′55″E 352:Etymology 266:Paleozoic 4272:Mesozoic 3848:Permian 3669:Neogene 3509:18198148 3418:Archived 3347:52120430 3339:30157290 3233:Archived 3082:18633415 2991:38418475 2982:10901853 2779:11857903 2734:26000791 2726:19210589 2609:32103087 2550:32265448 2352:85411546 2283:27377632 2197:27698119 1882:Mesozoic 1799:See also 1639:Cenozoic 1567:Humidity 1556:Rhaetian 1544:red beds 1510:and the 1492:Gondwana 1490:, while 1480:Laurasia 1469:Atlantic 1461:Gondwana 1457:Laurasia 1445:suturing 1316:Cenozoic 1294:therians 1292:, early 1263:Tapejara 1208:mosasaur 1173:avialans 1106:termites 1085:such as 1053:Jurassic 1037:), most 955:big five 945:Triassic 866:Cenozoic 847:Tertiary 829:new life 759:such as 757:diapsids 728:), like 718:conifers 702:theropod 651:Cenozoic 635:tectonic 629:; a hot 623:reptiles 605:Jurassic 601:Triassic 461:Zhejiang 391:Global ( 317:Jurassic 309:Triassic 300:Cenozoic 3557:21 July 3500:2596898 3446:Bibcode 3437:Geology 3376:Bibcode 3296:28 July 3095:28 June 3090:4315155 3062:Bibcode 2996:28 June 2930:21 July 2913:Bibcode 2862:21 July 2845:Bibcode 2759:Bibcode 2614:28 July 2600:7044291 2541:7138847 2520:Bibcode 2488:23 July 2451:Bibcode 2288:31 July 2274:4935969 2253:Bibcode 2188:5081622 2157:Bibcode 1781:anatomy 1773:insects 1716:Permian 1685:biomass 1681:tropics 1627:grasses 1576:in the 1540:deserts 1526:Climate 1488:Eurasia 1482:became 1453:rifting 1447:of the 1175:, like 1154:Conifer 1045:at the 933:on the 922:extinct 870:periods 823:  794:prefix 710:mammals 698:evolved 639:Pangaea 618:and of 612:Periods 584:is the 534:Tunisia 514:Iridium 457:Meishan 427:Erathem 221:– 211:– 201:– 191:– 181:– 171:– 161:– 151:– 141:– 131:– 4202:  3507:  3497:  3396:  3345:  3337:  3162:Berner 3088:  3080:  3053:Nature 2989:  2979:  2971:  2884:  2777:  2732:  2724:  2607:  2597:  2556:  2548:  2538:  2481:  2399:  2350:  2281:  2271:  2220:  2195:  2185:  2177:  2121:  2004:-oh-, 1845:  1671:cycads 1656:Ginkgo 1590:oxygen 1548:halite 1500:Africa 1424:, the 1420:, the 1414:Arctic 1304:, and 971:, and 777:, and 744:Naming 734:cycads 680:, and 645:: the 530:El Kef 436:Formal 360:Formal 330:  3343:S2CID 3176:p. 31 3142:2006 3086:S2CID 2959:(1). 2730:S2CID 2554:S2CID 2479:S2CID 2348:S2CID 2028:See: 2012:-z-, 2000:-ik, 1765:birds 1699:Fauna 1689:ferns 1617:Flora 1516:Asian 1122:like 939:avian 803:Οξσο- 797:meso- 792:Greek 465:China 382:Earth 3559:2023 3505:PMID 3413:Fern 3394:ISSN 3335:PMID 3298:2023 3124:here 3097:2024 3078:PMID 2998:2024 2987:PMID 2969:ISSN 2932:2023 2882:ISBN 2864:2023 2775:PMID 2722:PMID 2616:2023 2605:PMID 2546:PMID 2490:2023 2397:ISBN 2290:2023 2279:PMID 2218:ISBN 2193:PMID 2175:ISSN 2119:ISBN 2100:2019 2006:MESS 1843:ISBN 1767:and 1744:and 1729:and 1612:Life 1600:as " 1486:and 1443:and 1428:and 1377:and 1363:and 1336:and 1300:and 1286:and 1266:and 1248:and 1234:and 1140:and 1009:and 820:lit. 815:Μῡον 809:zōon 736:and 607:and 580:The 574:1991 505:2001 50:PreꞒ 3546:hdl 3538:doi 3495:PMC 3487:doi 3483:275 3454:doi 3384:doi 3325:doi 3321:105 3182:by 3070:doi 3058:454 3027:doi 2977:PMC 2961:doi 2921:doi 2909:290 2853:doi 2767:doi 2755:286 2712:doi 2595:PMC 2587:doi 2536:PMC 2528:doi 2469:hdl 2459:doi 2447:209 2338:doi 2269:PMC 2261:doi 2183:PMC 2165:doi 2153:113 2016:-s- 2014:MEE 2010:MEE 2008:-, 2002:MEZ 1998:ZOH 1996:-ə- 1994:MEZ 1888:IPA 1604:". 1206:(a 993:(a 586:era 417:Era 393:ICS 4263:: 4218:Ga 4214:Ma 4210:ka 3544:. 3534:15 3532:. 3526:. 3503:. 3493:. 3481:. 3475:. 3452:. 3442:34 3440:. 3392:. 3382:. 3370:. 3364:. 3341:. 3333:. 3319:. 3315:. 3251:, 3202:. 3170:. 3118:. 3084:. 3076:. 3068:. 3056:. 3050:. 3023:17 3021:. 3015:. 2985:. 2975:. 2967:. 2957:15 2955:. 2949:. 2919:. 2907:. 2901:. 2851:. 2841:18 2839:. 2833:. 2814:. 2795:. 2773:. 2765:. 2753:. 2728:. 2720:. 2708:22 2706:. 2700:. 2681:. 2669:^ 2659:. 2640:. 2624:^ 2603:. 2593:. 2583:10 2581:. 2575:. 2552:. 2544:. 2534:. 2526:. 2516:11 2514:. 2508:. 2477:. 2467:. 2457:. 2445:. 2439:. 2420:. 2369:. 2346:. 2334:51 2332:. 2326:. 2307:. 2277:. 2267:. 2259:. 2247:. 2241:. 2191:. 2181:. 2173:. 2163:. 2151:. 2145:. 2090:. 2069:. 2036:. 1987:-/ 1978:iː 1969:-, 1963:iː 1954:-, 1939:-, 1936:oʊ 1930:,- 1918:oʊ 1890:: 1864:. 1760:. 1633:. 1522:. 1506:, 1502:, 1498:, 1330:, 1324:, 1152:. 967:, 849:. 783:. 771:, 765:, 732:, 676:, 672:, 653:. 603:, 532:, 463:, 459:, 254:i 252:o 250:z 248:o 246:r 244:e 242:n 240:a 238:h 236:P 100:Pg 44:Ma 3614:e 3607:t 3600:v 3561:. 3548:: 3540:: 3511:. 3489:: 3460:. 3456:: 3448:: 3400:. 3386:: 3378:: 3372:9 3349:. 3327:: 3300:. 3130:. 3099:. 3072:: 3064:: 3035:. 3029:: 3000:. 2963:: 2934:. 2923:: 2915:: 2866:. 2855:: 2847:: 2818:. 2799:. 2781:. 2769:: 2761:: 2736:. 2714:: 2685:. 2663:. 2644:. 2618:. 2589:: 2560:. 2530:: 2522:: 2492:. 2471:: 2461:: 2453:: 2424:. 2405:. 2373:. 2354:. 2340:: 2311:. 2292:. 2263:: 2255:: 2249:7 2226:. 2199:. 2167:: 2159:: 2127:. 2102:. 2075:. 2019:. 1984:s 1981:. 1975:m 1972:ˌ 1966:z 1960:m 1957:ˌ 1951:s 1948:ɛ 1945:m 1942:ˌ 1933:z 1927:k 1924:ÉŞ 1921:. 1915:z 1912:ˈ 1909:ə 1906:z 1903:ɛ 1900:m 1897:ˌ 1894:/ 1641:. 1586:C 1240:. 997:) 912:) 905:( 899:) 892:( 886:) 879:( 832:' 826:' 812:( 800:( 724:( 520:. 448:. 395:) 290:c 288:i 286:o 284:z 282:o 280:s 278:e 276:M 256:c 105:N 95:K 90:J 85:T 80:P 75:C 70:D 65:S 60:O 55:Ꞓ 20:)

Index

Secondary Period
Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
P
h
a
n
e
r
o
z
o
i
c

Paleozoic
M
e
s
o
z
o
i
c

Cenozoic
Triassic
Jurassic
Cretaceous
Earth
ICS
Era
Erathem
Meishan
Zhejiang
China
31°04′47″N 119°42′21″E / 31.0798°N 119.7058°E / 31.0798; 119.7058
Iridium

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