Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.4202/app.2011.0131 |
New material and reinterpretation of the Late Cretaceous eutherian mammal Paranyctoides from Uzbekistan | |
Averianov, Alexander O.1; Archibald, J. David2 | |
通讯作者 | Averianov, Alexander O. |
来源期刊 | ACTA PALAEONTOLOGICA POLONICA
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ISSN | 0567-7920 |
出版年 | 2013 |
卷号 | 58期号:1页码:17-23 |
英文摘要 | Paranyctoides aralensis, based on a partially known set of lower postcanines from the Turonian Bissekty Formation of Uzbekistan, is proposed to be a junior subjective synonym of Sailestes quadrans, itself based on an M1 from the same stratigraphic unit. As a result, the latter taxon is recombined as Paranyctoides quadrans comb. nov. Based on newly collected or recognized specimens, we show that this species has four lower incisors, including a procumbent i1 and a relatively small i4, as well as five double-rooted premolars, the smallest of which (p3) can be lost ontogenetically. The p5 of this species is premolariform, rather than molariform as previously thought based on an erroneous identification, and resembles North American species of Paranyctoides in the presence of a small, cingulid-like paraconid and a distal talonid cusp, as well as the absence of a metaconid. The lower molars of Paranyctoides are unique among Late Cretaceous eutherians in having a larger, lingually placed paraconid. Paranycoides probably is the sister taxon of the Late Cretaceous Zhelestidae. |
英文关键词 | Mammalia Eutheria Paranyctoides Late Cretaceous Uzbekistan |
类型 | Article |
语种 | 英语 |
国家 | Russia ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000318462900002 |
WOS关键词 | KYZYL-KUM DESERT |
WOS类目 | Paleontology |
WOS研究方向 | Paleontology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175449 |
作者单位 | 1.Russian Acad Sci, Inst Zool, St Petersburg 199034, Russia; 2.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA |
推荐引用方式 GB/T 7714 | Averianov, Alexander O.,Archibald, J. David. New material and reinterpretation of the Late Cretaceous eutherian mammal Paranyctoides from Uzbekistan[J],2013,58(1):17-23. |
APA | Averianov, Alexander O.,&Archibald, J. David.(2013).New material and reinterpretation of the Late Cretaceous eutherian mammal Paranyctoides from Uzbekistan.ACTA PALAEONTOLOGICA POLONICA,58(1),17-23. |
MLA | Averianov, Alexander O.,et al."New material and reinterpretation of the Late Cretaceous eutherian mammal Paranyctoides from Uzbekistan".ACTA PALAEONTOLOGICA POLONICA 58.1(2013):17-23. |
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