25:
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553:. The rows of cusps also display a strong curvature and the cuspate anterolabial lobe is better developed. There is more variation in the height of the cusps among the middle row. These particular premolars — P4s — have three rows of cusps, of which there seem to be about 15 or so in all. In addition, "the enamel is weakly wrinkled on all specimens". (
572:. Although knowledge of this species is limited, we consider its naming to be justified based on the diagnostic morphology of ultimate fourth premolars in ptilodontids generally (Krause 1982, 1987) and the unique structure of these teeth.
583:
Cochrane 2 has also been interpreted as correlating to the
Porcupine Hills Formation, but recent studies suggest that it is part of the Paskapoo, as originally concluded by Russell in 1929.
576:
The species name honours L. S. Russell "for his pioneering research on the mammals from
Cochrane 2". All presently identified remains are part of the collection of the
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D. W. Krause. (1987) "Baiotomeus, a new ptilodontid multituberculate (Mammalia) from the Middle
Paleocene of western North America."
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681:
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in length. This is smaller than the teeth of other genus members; from front to back, approximately 45% less than
2629:
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201:
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Z. Kielan-Jaworowska and J. H. Hurum. (2001) "Phylogeny and
Systematics of multituberculate mammals."
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41:
33:
702:
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58:
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619:
New earliest
Tiffanian (late Paleocene) mammals from Cochrane 2, southwestern Alberta, Canada
577:
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At present, P4s are the only specimens from
Cochrane 2 that we can identify as pertaining to
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1955:
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at Yale. Collected in 1958 and 1965, these were originally described as belonging to
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have been discovered in
Montana in the United States, in the Medicine Rocks of the
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G. G. Simpson (1935). "New
Paleocene mammals from the Fort Union of Montana."
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in the United States, in strata of the Gidley Quarry dated to the
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Craig S. Scott, Richard C. Fox, and Gordon P. Youzwyshyn. (2002)
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is a fairly substantial multituberculate weighing almost
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of
Alberta, Canada. The holotype specimen hails from
494:. It was given its current name in 1987 by Krause (
2616:
644:Proceedings of the United States National Museum
321:is a genus of mammals from the extinct order of
46:but its sources remain unclear because it lacks
459:Krause formally established the genus in 1987.
428:), but it has been reclassified several times:
675:
1692:
682:
668:
477:, which have been dated to the Paleocene.
884:
77:Learn how and when to remove this message
744:
652:This information has been derived from
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343:was formally named by Krause in 1987 (
2496:
2495:
1679:
871:
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663:
530:, which has been dated to the lower
455:by Hartman in 1986 — which is
18:
13:
2640:Paleogene mammals of North America
14:
2661:
537:Remains consist of nine upper pre
486:Peabody Museum of Natural History
480:Several specimens, including the
417:The species was originally named
387:. Remains have been found in the
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654:MESOZOIC MAMMALS; Ptilodontoidea
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564:According to the same authors:
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526:, Canada, in Cochrane 2 of the
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347:), and has also been known as
1:
2645:Fossil taxa described in 1987
634:Acta Palaeontologica Polonica
586:
541:, (P4), which average nearly
502:has also been confused with
7:
2635:Paleocene genus extinctions
451:It was finally assigned to
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397:Porcupine Hills Formation
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197:Scientific classification
195:
93:
16:Extinct family of mammals
656:, an Internet directory.
534:stage of the Paleocene.
32:This article includes a
609:Journal of Paleontology
522:has been discovered in
325:. It is known from the
61:more precise citations.
475:Tongue River Formation
2597:Paleobiology Database
578:University of Alberta
447:in 1974, by Schiebout
649:, pg. 221–244.
639:, pg. 691–704.
614:, pg. 595–603.
604:, pg. 389–429.
424:by Simpson in 1935 (
389:Fort Union Formation
381:Baiotomeus douglassi
2322:Djadochtatherioidea
520:Baiotomeus russelli
471:Baiotomeus lamberti
2394:Djadochtatheriidae
1956:Microcosmodontidae
549:and 40% less than
528:Paskapoo Formation
438:in 1940, by Jepsen
34:list of references
2630:Paleocene mammals
2612:
2611:
2584:Open Tree of Life
2498:Taxon identifiers
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2448:
2447:
2444:
2443:
2440:
2439:
2316:
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2198:
2197:
2055:Neoplagiaulacidae
1671:
1670:
1658:
1657:
1654:
1653:
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1649:
1626:
1625:
1426:
1425:
1232:Paulchoffatioidea
1226:
1225:
1072:
1071:
1068:
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950:Ferugliotheriidae
863:
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2410:Djadochtatherium
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2204:Taeniolabidoidea
1995:
1994:
1701:
1700:
1690:
1689:
1677:
1676:
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1594:Albionbaataridae
1437:
1436:
1310:Paulchoffatiidae
1241:Pinheirodontidae
1237:
1236:
1161:
1160:
1085:
1084:
1079:Multituberculata
923:
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323:Multituberculata
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99:Temporal range:
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57:this article by
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1368:Meketichoffatia
1319:Bathmochoffatia
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1022:Gondwanatherium
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988:Trapalcotherium
968:Ferugliotherium
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1610:Kielanobaatar
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1389:Pseudobolodon
1386:
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1375:Paulchoffatia
1372:
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1361:Meketibolodon
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483:
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443:Neoplagiaulax
440:
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56:
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43:
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35:
30:
21:
20:
2505:
2429:
2424:Mangasbaatar
2422:
2417:Kryptobaatar
2415:
2408:
2403:Catopsbaatar
2401:
2381:
2376:Nessovbaatar
2374:
2369:Kamptobaatar
2367:
2349:Nemegtbaatar
2347:
2340:
2335:Bulganbaatar
2333:
2305:
2298:
2280:Sphenopsalis
2278:
2271:
2266:Lambdopsalis
2264:
2244:
2239:Valenopsalis
2237:
2230:
2223:
2215:
2187:
2180:
2173:
2167:
2166:
2159:
2139:
2132:
2127:Paressonodon
2125:
2120:Parectypodus
2118:
2111:
2104:
2097:
2090:
2083:
2076:
2069:
2062:
2042:
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2028:
2008:
2001:
1977:
1970:
1963:
1943:
1936:
1929:
1909:
1902:
1895:
1888:
1868:
1861:
1856:Meniscoessus
1854:
1847:
1840:
1833:
1826:Cimolomyidae
1813:
1806:
1799:
1792:
1785:
1776:
1763:
1756:
1749:
1742:
1735:
1730:Corriebaatar
1728:
1721:
1714:
1707:
1615:
1608:
1603:Albionbaatar
1601:
1581:
1576:Tedoribaatar
1574:
1567:
1560:
1553:
1545:
1538:
1531:
1524:
1517:
1510:
1503:
1496:
1491:Dolichoprion
1489:
1482:
1475:Eobaataridae
1462:
1457:Morrisonodon
1455:
1448:
1415:
1408:
1401:
1394:
1387:
1380:
1373:
1366:
1359:
1352:
1345:
1338:
1333:Guimarotodon
1331:
1324:
1317:
1297:
1290:
1283:
1276:
1269:
1262:
1255:
1248:
1215:
1208:
1201:
1194:Allodontidae
1181:
1174:
1167:
1142:
1134:
1127:
1120:
1113:
1108:Hahnotherium
1106:
1098:
1091:
1057:
1050:
1042:
1035:
1027:
1020:
1013:
1006:
986:
981:Magallanodon
979:
966:
960:Argentodites
958:
938:Groeberiidae
936:
931:Adalatherium
929:
903:
730:Theriiformes
725:
646:
643:
636:
633:
622:
611:
608:
601:
599:Paleontology
598:
592:Bibliography
582:
575:
569:
563:
556:
550:
547:B. douglassi
546:
536:
519:
518:
513:
503:
499:
496:Krause, 1987
489:
479:
470:
468:
463:
456:
452:
450:
441:
432:
418:
416:
380:
379:
375:B. douglassi
374:
360:
354:
348:
345:Krause, 1987
340:
335:
317:
316:
315:
307:
303:
300:B. douglassi
299:
298:
283:
282:
94:
88:
73:
64:
53:Please help
45:
2530:Wikispecies
2383:Sloanbaatar
2307:Taeniolabis
2182:Prochetodon
2010:Neoliotomus
1965:Acheronodon
1931:Clemensodon
1881:Kogaionidae
1835:Buginbaatar
1751:Uzbekbaatar
1716:Ameribaatar
1695:Cimolodonta
1682:Cimolodonta
1632:Cimolodonta
1555:Nokerbaatar
1484:Cheruscodon
1299:Pinheirodon
1278:Gerhardodon
1271:Ecprepaulax
1257:Bructerodon
1250:Bernardodon
1183:Zofiabaatar
1169:Arginbaatar
974:LACM 149371
570:B. russelli
551:B. lamberti
514:B. russelli
500:B. lamberti
469:Remains of
464:B. lamberti
405:Torrejonian
308:B. russelli
304:B. lamberti
116:65–62
105:Torrejonian
59:introducing
2619:Categories
2536:Baiotomeus
2506:Baiotomeus
2469:See also:
2273:Prionessus
2225:Catopsalis
2175:Kimbetohia
2168:Baiotomeus
2161:Aenigmamys
1938:Eucosmodon
1890:Barbatodon
1863:Paressodon
1641:see below↓
1583:Teutonodon
1569:Sinobaatar
1547:Monobaatar
1533:Liaobaatar
1526:Indobaatar
1464:Plagiaulax
1354:Kuehneodon
1347:Kielanodon
1340:Henkelodon
1203:Ctenacodon
1100:Baidabatyr
1093:Argillomys
1052:Sudamerica
905:Haramiyida
887:Allotheria
874:Allotheria
838:see below↓
829:Allotheria
790:Cynodontia
775:Cynodontia
691:Allotheria
587:References
453:Baiotomeus
365:(partly).
353:(partly),
341:Baiotomeus
318:Baiotomeus
284:Baiotomeus
95:Baiotomeus
67:March 2013
2431:Tombaatar
2141:Xyronomys
2134:Xanclomys
2099:Mimetodon
2092:Mesodmops
2071:Ectypodus
2064:Cernaysia
2037:Cimolodon
2030:Anconodon
2003:Filikomys
1904:Kogaionon
1870:Parikimys
1849:Essonodon
1842:Cimolomys
1808:Dakotamys
1801:Cimexomys
1794:Cedaromys
1787:Bryceomys
1758:Viridomys
1737:Fractinus
1709:Allocodon
1410:Sunnyodon
1403:Rugosodon
1396:Renatodon
1326:Galveodon
1292:Lavocatia
1264:Cantalera
1129:Tashtykia
1044:Patagonia
1029:Greniodon
763:Synapsida
747:Synapsida
707:Kingdom:
532:Tiffanian
491:Mimetodon
445:douglassi
436:douglassi
434:Mimetodon
422:douglassi
412:Paleocene
350:Mimetodon
327:Paleocene
220:Kingdom:
214:Eukaryota
109:Tiffanian
101:Paleocene
2515:Wikidata
2481:Category
2246:Yubaatar
2217:Bubodens
2189:Ptilodus
2078:Krauseia
2044:Liotomus
1945:Stygimys
1540:Loxaulax
1498:Eobaatar
1285:Iberodon
1217:Psalodon
1210:Passumys
1176:Glirodon
1037:Lavanify
817:Mammalia
802:Mammalia
721:Mammalia
715:Chordata
713:Phylum:
709:Animalia
623:Warning:
507:montanus
505:Ptilodus
482:holotype
420:Ptilodus
362:Ptilodus
263:Family:
244:Mammalia
234:Chordata
230:Phylum:
224:Animalia
210:Domain:
2589:3615482
2576:1198546
2563:4831424
2550:4526772
2521:Q730287
2113:Nidimys
2085:Mesodma
1911:Litovoi
1897:Hainina
1744:Halodon
1723:Boffius
1519:Iberica
1450:Bolodon
1122:Tagaria
1115:Janumys
1059:Vintana
719:Class:
524:Alberta
410:of the
401:Wyoming
393:Montana
369:Species
292:Species
276:Genus:
250:Order:
240:Class:
185:↓
55:improve
559:, 2002
557:et al.
555:Scott
543:2.5 mm
539:molars
457:before
2602:39811
2571:IRMNG
1779:group
726:Clade
637:47(4)
408:stage
385:200 g
338:genus
40:, or
2558:GBIF
815:see
788:see
761:see
625:353
395:and
336:The
124:PreꞒ
2545:EoL
632:).
630:PDF
498:).
391:of
329:of
2621::
2599::
2586::
2573::
2560::
2547::
2532::
2517::
728::
647:83
627:KB
612:61
602:44
580:.
561:)
509:.
414:.
333:.
174:Pg
118:Ma
44:,
36:,
2220:?
1768:?
1550:?
1147:?
1139:?
1103:?
1047:?
1032:?
976:?
963:?
952:?
941:?
919:?
908:?
683:e
676:t
669:v
621:(
280:†
267:†
254:†
179:N
169:K
164:J
159:T
154:P
149:C
144:D
139:S
134:O
129:Ꞓ
113:~
111:)
107:-
103:(
80:)
74:(
69:)
65:(
51:.
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