Arid
DOI10.4202/app.2010.0097
Therian femora from the Late Cretaceous of Uzbekistan
Chester, Stephen G. B.1; Sargis, Eric J.1,2,3; Szalay, Frederick S.4; Archibald, J. David5; Averianov, Alexander O.6
通讯作者Chester, Stephen G. B.
来源期刊ACTA PALAEONTOLOGICA POLONICA
ISSN0567-7920
出版年2012
卷号57期号:1页码:53-64
英文摘要

Femora referable to metatherians and eutherians recovered from the Bissekty Formation, Dzharakuduk, Kyzylkum Desert, Uzbekistan (90 Mya), are described. Fourteen isolated specimens were sorted based on size and morphology into groups that likely correspond to the species level or higher. Groups were then tentatively assigned to taxa known from teeth, petrosals, and/or other postcrania at these localities. One distal femur of a small arboreal metatherian, and several eutherian distal femora that probably represent zhelestids and/or zalambdalestids were identified. With the exception of one proximal femur that is similar in some aspects to the zalambdalestid Barunlestes, and a previously described multituberculate specimen, all other proximal femora from the Bissekty Formation exhibit a metatherian-like morphology. The dental record currently suggests the presence of twelve eutherian species and only one metatherian at Dzharakuduk, whereas the humeral and crurotarsal evidence supports the presence of at least two or four metatherian species, respectively. Given the sample size of the proximal femora, the morphological diversity present, and the overwhelming presence of eutherians at these localities, it is highly unlikely that the overwhelming majority of proximal femora actually represent metatherians. Therefore, this sample may suggest that the metatherian proximal femoral condition is primitive for Theria and that some eutherian taxa (probably including Zhelestidae, which are dentally most abundant at these localities) retain this condition.


英文关键词Theria Metatheria Eutheria Zhelestidae Zalambdalestidae femur Cretaceous Uzbekistan
类型Article
语种英语
国家USA ; Russia
收录类别SCI-E
WOS记录号WOS:000302518800004
WOS关键词METATHERIAN-EUTHERIAN DICHOTOMY ; FUNCTIONAL-ADAPTIVE ANALYSIS ; POSTCRANIAL SKELETON ; HINDLIMB ; MAMMALIA ; MORPHOLOGY ; ANATOMY ; BONES ; ADAPTATIONS ; EVOLUTION
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/2XILL650/170935
作者单位1.Yale Univ, Dept Anthropol, New Haven, CT 06520 USA;
2.Yale Univ, Div Vertebrate Zool, New Haven, CT 06520 USA;
3.Yale Univ, Div Vertebrate Paleontol, New Haven, CT 06520 USA;
4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;
5.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA;
6.Russian Acad Sci, Inst Zool, St Petersburg 199034, Russia
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GB/T 7714
Chester, Stephen G. B.,Sargis, Eric J.,Szalay, Frederick S.,et al. Therian femora from the Late Cretaceous of Uzbekistan[J],2012,57(1):53-64.
APA Chester, Stephen G. B.,Sargis, Eric J.,Szalay, Frederick S.,Archibald, J. David,&Averianov, Alexander O..(2012).Therian femora from the Late Cretaceous of Uzbekistan.ACTA PALAEONTOLOGICA POLONICA,57(1),53-64.
MLA Chester, Stephen G. B.,et al."Therian femora from the Late Cretaceous of Uzbekistan".ACTA PALAEONTOLOGICA POLONICA 57.1(2012):53-64.
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