LIMB BONES OF CHILOTHERIUM WIMANI (PERISSODACTYLA,RHINOCEROTIDAE) FROM THE LATE MIOCENE OF THE LINXIA BASIN IN GANSU,CHINA
2002; Linguagem: Inglês
ISSN
1000-3118
Autores Tópico(s)Genomics and Phylogenetic Studies
ResumoThe genus Chilotherium was dominant among the Hipparion fauna of the Late Miocene in China, and it also appeared in other regions of Asia and South Europe widely. However, studies for the postcranial skeletons of Chilotherium are scarce. Although rich fossils of Chilotherium were discovered in Baode, Shanxi and Fugu, Shaanxi, only some postcranial bones of Ch. anderssoni were described. Recently, very abundant fossils of Ch. wimani were discovered from the Late Miocene of the Linxia Basin in Gansu, China, including a lot of skulls as well as postcranial skeletons. In this paper, limb bones of Ch. wimani are studied. The fore and hind feet of Ch. wimani are tridactyle, and limb bones are as short and robust as those of Ch. anderssoni discovered from Baode. Facets Ⅱ and Ⅲ for calcaneus on the posterior face of astragalus of Ch. wimani are connected to each other or separated by a narrow groove. In the subfamily Aceratheriinae, limb bones of most genera and species are longer and slenderer than those of Chilotherium , such as Plesiaceratherium gracile, Alicornops simorrense, Aceratherium incisivum, Hoploaceratherium tetradactylum and Acerorhinus zernowi. Only limb bones of Acerorhinus palaeosinensis are close to those of Chilotherium .
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