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Vertebrata Palasiatica ›› 2014, Vol. 52 ›› Issue (4): 467-485.

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Restudy of Metailurus major from Yushe Basin, Shanxi Province reported by  Teilhard de Chardin and Leroy

LI Yu   

  • Online:2014-12-15 Published:2014-12-15

对德日进和罗学宾所研究的山西榆社大后猫(Metailurus major)化石的再研究

李 雨   

Abstract: In 1945, P. Teilhard de Chardin and P. Leroy described some fossils of Metailurus major found from Yushe Basin, Shanxi Province. The materials included 4 more or less completely preserved skulls and hemi mandibles, whose provenance and stratigraphic position had fortunately been clarified using the Tianjin Natural History Museum (TNHM) archives during the 1990’s (personal communication with Qiu Zhangxiang). Restudy of these specimens indicates that they belong to a new species, named here Metailurus ultimus.

摘要: 德日进和罗学宾于1945年报道了山西榆社盆地发现的4件大后猫(Metailurus major)化石,但没有注明具体产地和层位。本文通过查询这些标本的原始资料,最终确定其产自榆社盆地晚上新世麻则沟组中部地层。其与前人报道的大多数晚中新世的Metailurus化石在时间上存在较大的间隔,是目前世界范围内发现的时代最晚的Metailurus化石之一。对这些标本的再研究表明,这些材料与M. major的正模及其他归入标本有较大的差别,应为一新种,将之命名为Metailurus ultimus。该种以体型大而粗壮,头骨在颧弓处特别宽、前半部形成一短宽的等边三角形,下颌水平支厚实、与颊齿列一起呈弧形向外明显凸出,上、下犬齿前后嵴上有明显的横向沟纹,P3相对较长、前附尖明显,P4前附尖和原尖都较大,p3前附尖小但明显,m1跟座非常退化至接近于无等特征区别于其他已知各种。