期刊
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
卷 319, 期 -, 页码 58-83出版社
ELSEVIER
DOI: 10.1016/j.palaeo.2012.01.005
关键词
Taphonomy; Tetrapod skeleton; Drought; Fluvial scour; Permian; Russia; Severodvinian; Vyatkian
资金
- NERC [NE/C518973/1]
- Natural Environment Research Council [NE/C518973/1, bgs05001] Funding Source: researchfish
- NERC [NE/C518973/1, bgs05001] Funding Source: UKRI
The Kotel'nich locality in European Russia has long been a rich source of high-quality tetrapod fossils, including pareiasaurs, dicynodonts, gorgonopsians and theriodonts. The age of the Kotel'nich locality has been debated, but it corresponds to early Severodvinian in the Russian stratigraphic scheme, equivalent to the late Capitanian (late Middle Permian) on the international time scale. Remarkably, the majority of specimens are complete, quite unlike those from most Russian Permo-Triassic red bed localities; commonest of all are 1-2-metre long pareiasaur skeletons of the genus Deltavjatia, preserved in hollows on top of a consolidated palaeosol horizon. Previous taphonomic scenarios in the Russian literature have included suggestions that the animals were overwhelmed beneath sand dunes, mired in soft fluviatile sediments, caught at the bottom of a deep lake, trapped in burrows, or dumped in fluviatile scours. It is probable that the pareiasaurs were searching for water in a time of catastrophic aridification, and died, weakened, in shallow hollows. In this case, we also emphasise the importance of floodplain microtopography in creating the sedimentary conditions necessary for the preservation of exceptional vertebrate assemblages in a slowly aggrading fluviolacustrine setting. (c) 2012 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据