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Issue: Vol. 3872 No. 5: 13 Oct. 2014
Type: Article
Published: 2014-10-13
DOI: 10.11646/zootaxa.3872.5.1
Page range: 401–439
Abstract views: 71
PDF downloaded: 2

A new species of Chleuastochoerus (Artiodactyla: Suidae) from the Linxia Basin, Gansu Province, China

Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044, China State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences Nanjing 210008, China
Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044, China
Linxia Basin upper Miocene Liushu Formation Hyotheriinae Chleuastochoerus phylogeny

Abstract

The Linxia Basin, Gansu Province, China, is known for its abundant and well-preserved fossils. Here a new species, Chleuastochoerus linxiaensis sp. nov., is described based on specimens collected from the upper Miocene deposits of the Linxia Basin, distinguishable from C. stehlini by the relatively long facial region, more anteromedial-posterolaterally compressed upper canine and more complicated cheek teeth. A cladistics analysis placed Chleuastochoerus in the subfamily Hyotheriinae, being one of the basal taxa of this subfamily. Chleuastochoerus linxiaensis and C. stehlini are considered to have diverged before MN 10. C. tuvensis from Russia represents a separate lineage of Chleuastochoerus, which may have a closer relationship to C. stehlini but bears more progressive P4/p4 and M3.