河北磁县九龙口中中新世“Macrotherium cf.M.brevirostris”的分类地位

Shaokun Chen,zhongguokexueyuangujizhuidongwuyugurenleiyanjiusuo,Yan Liu,zhongguokexueyuanjizhuidongwuyanhuayurenleiqiyuanzhongdianshiyanshibeijingzhongguokexueyuangujizhuidongwuyugurenleiyanjiusuo,zhongguokexueyuandaxuebeijing,chongqingsanxiagurenleiyanjiusuochongqingchongqingzhongguosanxiabowuguan

河北磁县九龙口中中新世“Macrotherium cf.M.brevirostris”的分类地位

2013

Shaokun Chen
zhongguokexueyuangujizhuidongwuyugurenleiyanjiusuo
Yan Liu
zhongguokexueyuanjizhuidongwuyanhuayurenleiqiyuanzhongdianshiyanshibeijingzhongguokexueyuangujizhuidongwuyugurenleiyanjiusuo
zhongguokexueyuandaxuebeijing
chongqingsanxiagurenleiyanjiusuochongqingchongqingzhongguosanxiabowuguan

河北磁县九龙口是我国东部地区一个比较重要的中中新世化石地点,该地点出土的爪兽化石的分类地位一直未能确定.近年来的系统发育分析和通古尔地区新材料的研究显示,九龙口的爪兽应当是Chalicotherium属内一个未定名的新种,本文将之命名为C.hebeiense sp.now..该种以下颌粗壮、下颌联合的后缘在p4-ml之间、下颌支深、前臼齿列短、P3中谷封闭、p4下内尖发育且孤立、下臼齿的下三角座U型及下后附尖弱等特征为鉴定依据.柴达木盆地曾经发现过的一段下颌残段(IVPPV 12531)也可暂时归入此种.

Keywords:

Paleontology
Geology
Ecology

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