干旱区生态环境知识资源中心(Arid): THE TAXONOMIC POSITION OF THE TWO-HORNED RHINOCEROS FROM PODPUSK-LEBYAZHYE FAUNAL COMPLEX OF WESTERN SIBERIA

Arid

DOI	10.17223/25421379/15/3
	THE TAXONOMIC POSITION OF THE TWO-HORNED RHINOCEROS FROM PODPUSK-LEBYAZHYE FAUNAL COMPLEX OF WESTERN SIBERIA
	Shpansky, A., V; Ilyina, S. A.
通讯作者	Shpansky, AV
来源期刊	GEOSFERNYE ISSLEDOVANIYA-GEOSPHERE RESEARCH
ISSN	2542-1379
EISSN	2541-9943
出版年	2020
期号	2 页码:32-43
英文摘要	Sediments of the Irtysh suite are exposed on the right bank of the River Irtysh in the South-East of the West Siberian plain. The geological age of the sediments corresponds to the Gelasian Age (= Middle Villafranchian). The sands of the Irtysh suite contain the remains of large mammals of the Podpusk-Lebyazhye complex. The species composition of fauna and the evolutionary level of horses and elephants of the mammoth lineage allow us to compare it with Hapry fauna in the South of Eastern Europe (MN 17). The remains of the small two-horned rhinoceros were found among numerous mammal remains in Lebyazhye 2 and Moiseevka 1. The lower jaw fragment with m1 and m2 and metatarsale III are described in this article. The bones are highly mineralized. The teeth are about half worn down. The teeth crowns are slightly tilted forward. The teeth enamel is smooth, shiny, porcelain-like, without any cement. The inner valleys are open, sharply narrowing to the base. They have a triangular shape The depth of the valleys is the same. The valleys are constrained by a low enamel ridge from the lingual side. Metalophid and hypolophid are U-shaped in the cross section. On m1, the width of the metalophid at the crown base is slightly less than the width of the hypolophid. The cingulum is developed on anterior and posterior crown walls of the teeth. The proximal part with a length of 90 mm was preserved from the left metatarsale III. It corresponds to about 2/3 of the bone length. The length of the whole bone could have been about 135 mm. The articular facet with os cuneiforme has a Ushape. There is a well-defined fossa on the medial side. The plantar part of the epiphysis protrudes strongly backwards and overhangs the diaphysis. The antero-posterior and transversal diameters of the proximal epiphysis are close to each other. The diaphysis diameter in the middle part has a wide oval shape with bevelled side edges. The teeth and metatarsale III are small in size (Tables 1 and 2). The comparative analysis of morphometric data showed that the studied remains can be related to Stephanorhinus etruscus Falconer. Its remains are known from Spain to the Caucasus and the Northern Black Sea region. The appearance of the Etruscan rhinoceros corresponds to the end of the Pliocene (MN 16), and its extinction in Eastern Europe occurred in the second half of the early Neo-Pleistocene. On the territories of Kazakhstan and the West Siberian plain, only S. kirchbergensis was reliably known from the genus Stephanorhinus. The remains of S. etruscus from these territories are described for the first time. The meadow-steppe vegetation was developed with the transition to forest-steppe for the time of sediment formation of the Irtysh suite in the South-East of the West Siberian plain. Grasses and meadow grasses, as well as a forest and shrub vegetation, are widely distributed in the spore-pollen spectra. The climate of this time was warm and subhumid. Savanna-type landscapes with watered areas are widely developed. The presence of gazelles, antelopes, camels and horses in Podpusk-Lebyazhye fauna indicates a wide development of open steppe areas and possibly semi-deserts.
英文关键词	Stephanorhinus etruscus Podpusk-Lebyazhinskiy faunal complex Middle Villafranchian Gelasian Western Siberia
类型	Article
语种	Russian
开放获取类型	Bronze
收录类别	ESCI
WOS记录号	WOS:000578942700003
WOS关键词	MAMMALIA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334669
作者单位	[Shpansky, A., V; Ilyina, S. A.] Natl Res Tomsk State Univ, Dept Hist Geol & Paleontol, Fac Geol & Geog, Tomsk, Russia
推荐引用方式 GB/T 7714	Shpansky, A., V,Ilyina, S. A.. THE TAXONOMIC POSITION OF THE TWO-HORNED RHINOCEROS FROM PODPUSK-LEBYAZHYE FAUNAL COMPLEX OF WESTERN SIBERIA[J],2020(2):32-43.
APA	Shpansky, A., V,&Ilyina, S. A..(2020).THE TAXONOMIC POSITION OF THE TWO-HORNED RHINOCEROS FROM PODPUSK-LEBYAZHYE FAUNAL COMPLEX OF WESTERN SIBERIA.GEOSFERNYE ISSLEDOVANIYA-GEOSPHERE RESEARCH(2),32-43.
MLA	Shpansky, A., V,et al."THE TAXONOMIC POSITION OF THE TWO-HORNED RHINOCEROS FROM PODPUSK-LEBYAZHYE FAUNAL COMPLEX OF WESTERN SIBERIA".GEOSFERNYE ISSLEDOVANIYA-GEOSPHERE RESEARCH .2(2020):32-43.