115:
335:. Mean annual temperature estimates for the vantage paleoclimate were made based on analysis of the fossil wood. Based on a series of wood anatomy characters, a temperature range between 15.8–16.2 °C (60.4–61.2 °F). This is distinctly warmer then the modern mean annual temperature of 8.4 °C (47.1 °F).
471:
in the wood are mostly solitary and have an oval to round outline. When grouped, the vessels are present in sets of mainly two and three, though rare four and five groupings are known. On average the vessel cells range between 102 and 408 nm
323:
performed on the Grande Ronde
Basalts gives an age of 15.6 million years old, and dating of the Frenchman Springs Member gives a date of 15.3 million years old. This places the
639:
343:
The species was described from the 4 cm × 2.5 cm × 3 cm (1.57 in × 0.98 in × 1.18 in) section of mature
421:
402:
363:
415:
664:
580:
Wiemann, M. C.; Manchester, S. R.; Wheeler, E. A. (1999). "Paleotemperature estimation from dicotyledonous wood anatomical characters".
634:
649:
367:
317:, with the interbed overlain by the Ginkgo Flow, the oldest segment of the Frenchman Springs Member of the Wanapum basalts.
644:
659:
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which are separated from each other by between one and two layers of thick walled flattened fibers. The
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10 in) in length with horizontal to oblique end walls adjoining the next vessel cell and a simple
371:
517:
409:, who pioneered the interest and study of the Vantage petrified woods. The species was one of three
629:
324:
114:
485:
464:
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The type specimen was part of a collection compiled by Jay O'Leary, who was then a student of
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589:
481:
8:
441:
306:
593:
605:
406:
282:
109:
309:. The petrified woods of the area are preserved in an interbed area between the older
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518:"Miocene fossil woods from the Columbia Basalts of central Washington"
488:, usually in groups of threes, which are composed of cells of a type.
413:
species described by
Prakash and Barghoorn in the paper, along with
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allowing fluid passage across the cell wall. The wood has fusiform
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56:
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of
Harvard University. Prakash and Barghoorn published their 1961
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in the United States. It is one of three
Washington state
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553:"Miocene Woods of Eastern Washington Part1:Introduction"
292:
359:collections of Harvard College. and was studied by
511:
509:
507:
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621:
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498:
289:species described in 1961 from petrified wood.
277:section. The species is solely known from the
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640:Flora of the West Coast of the United States
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547:
545:
533:
542:
622:
516:Prakash, U.; Barghoorn, E. S. (1961).
368:Birbal Sahni Institute of Palaeobotany
355:, number 55226, was preserved in the
301:, in 1954 from the west bank of the
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665:Paleontology in Washington (state)
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293:Distribution and paleoenvironment
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34:
558:. The Evolving Earth Foundation
522:Journal of the Arnold Arboretum
384:Journal of the Arnold Arboretum
635:Extinct flora of North America
458:
1:
650:Fossil taxa described in 1961
491:
425:. Based on the wood anatomy,
281:sediments exposed in central
247:Prakash & Barghoorn, 1961
7:
645:Flora of Washington (state)
429:is closest in structure to
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10:
681:
237:
230:
110:Scientific classification
108:
23:
660:Plants described in 1961
463:The wood shows distinct
270:described from a single
16:Extinct species of maple
535:10.5962/bhl.part.19013
594:1999Palai..14..459W
311:Grande Ronde Basalt
307:Vantage, Washington
407:Yakima, Washington
482:perforation plate
442:A. grandidentatum
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223:A. beckianum
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405:, a resident of
376:type description
313:and the younger
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29:Temporal range:
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347:designated the
345:secondary xylem
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315:Wanapum basalts
299:Harvard College
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630:Miocene plants
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588:(5): 459–474.
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528:(2): 165–203.
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449:is closest to
403:George F. Beck
390:of the chosen
372:Elso Barghoorn
361:paleobotanists
357:paleobotanical
340:
337:
329:Langhian stage
303:Columbia River
294:
291:
279:Middle Miocene
266:in the family
259:is an extinct
256:Acer beckianum
250:
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241:Acer beckianum
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25:Acer beckianum
15:
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452:A. circinatum
448:
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439:is closer to
438:
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428:
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396:
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392:specific name
389:
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365:
364:Uttam Prakash
362:
358:
354:
353:type specimen
350:
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336:
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330:
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325:vantage woods
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232:Binomial name
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140:Tracheophytes
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560:. Retrieved
525:
521:
465:growth rings
462:
450:
447:A. puratanum
446:
440:
436:
430:
427:A. beckianum
426:
422:A. puratanum
420:
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394:
383:
380:A. beckianum
379:
342:
327:as from the
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255:
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222:
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172:
159:
146:
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24:
18:
459:Description
321:K–Ar dating
268:Sapindaceae
199:Sapindaceae
153:Angiosperms
624:Categories
492:References
437:A. olearyi
432:A. negundo
416:A. olearyi
283:Washington
189:Sapindales
486:wood rays
401:honoring
395:beckianum
388:etymology
217:Species:
123:Kingdom:
562:June 17,
435:, while
399:patronym
349:holotype
339:Taxonomy
195:Family:
166:Eudicots
32:Langhian
610:3515397
590:Bibcode
582:PALAIOS
476:10–1.61
469:vessels
386:. The
382:in the
366:of the
333:Miocene
331:of the
264:species
205:Genus:
185:Order:
127:Plantae
98:↓
608:
351:. The
272:fossil
179:Rosids
655:Maple
606:JSTOR
556:(PDF)
397:is a
305:near
261:maple
173:Clade
160:Clade
147:Clade
134:Clade
564:2019
472:(4.0
445:and
419:and
411:Acer
378:for
370:and
287:Acer
275:wood
210:Acer
37:PreꞒ
598:doi
530:doi
626::
604:.
596:.
586:14
584:.
572:^
544:^
526:42
524:.
520:.
500:^
455:.
175::
162::
149::
136::
87:Pg
612:.
600::
592::
566:.
538:.
532::
478:×
474:×
92:N
82:K
77:J
72:T
67:P
62:C
57:D
52:S
47:O
42:Ꞓ
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