globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0109717
论文题名:
Redescription and Phylogenetic Analysis of the Mandible of an Enigmatic Pennsylvanian (Late Carboniferous) Tetrapod from Nova Scotia, and the Lability of Meckelian Jaw Ossification
作者: Roland B. Sookias; Christine Böhmer; Jennifer A. Clack
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-10-7
卷: 9, 期:10
语种: 英语
英文关键词: Jaw ; Dentition ; Temnospondyli ; Phylogenetic analysis ; Ossification ; Carboniferous period ; Fishes ; Mandible
英文摘要: The lower jaw of an unidentified Pennsylvanian (Late Carboniferous) tetrapod from Nova Scotia – the “Parrsboro jaw”- is redescribed in the light of recent tetrapod discoveries and work on evolution of tetrapod mandibular morphology and placed for the first time in a numerical cladistics analysis. All phylogenetic analyses place the jaw in a crownward polytomy of baphetids, temnospondyls, and embolomeres. Several features resemble baphetids and temnospondyls including dermal ornamentation, absence of coronoid teeth, and presence of coronoid shagreen. Dentary dentition is most similar to Baphetes. An adsymphysial toothplate may not preclude temnospondyl affinity. An apparent large exomeckelian fenestra, with the dorsal foraminal margins formed by an unossified element, echoes the morphology of the stem tetrapod Sigournea and is unusually primitive given the other features of the jaw. The jaw may thus provide an example of an intermediate stage in Meckelian element evolution.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0109717&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/19731
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, United Kingdom;GeoBio-Center, Ludwig-Maximilians-Universität München, München, Germany;GeoBio-Center, Ludwig-Maximilians-Universität München, München, Germany;Dept. für Geo- und Umweltwissenschaften, Ludwig-Maximilians-Universität München, München, Germany;Bayerische Staatssammlung für Paläontologie und Geologie München, München, Germany;University Museum of Zoology Cambridge, Cambridge, United Kingdom

Recommended Citation:
Roland B. Sookias,Christine Böhmer,Jennifer A. Clack. Redescription and Phylogenetic Analysis of the Mandible of an Enigmatic Pennsylvanian (Late Carboniferous) Tetrapod from Nova Scotia, and the Lability of Meckelian Jaw Ossification[J]. PLOS ONE,2014-01-01,9(10)
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