Notes on Asian stegodontids
Notes on Asian stegodontids
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DOI：
10.1016/j.quaint.2004.04.013
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发表时间：
2005-01-01
影响因子：
2.2
通讯作者：
Ratanasthien, B
中科院分区：
文献类型：
--
作者：
Saegusa, H;Thasod, Y;Ratanasthien, B
剑齿类，一种象状的鼻科动物，在亚洲的新近纪和第四纪繁盛。最近在剑齿类动物研究中最重要的发现是在泰国那空拉恰玛和云南元谋盆地发现的新剑龙和剑龙化石。这些标本显示了从剑龙到剑龙的过渡，并支持了剑龙起源于亚洲的观点。从大陆祖先进化而来的岛屿形态在日本岛屿上有最好的记录。在日本存在以下演代：S. zdanskyi， S. miensis，一种介于S. miensis和S. aurorae， S. aurorae和S. orientalis之间的中间形式。前三个分类群代表一个谱系。从S. zdanskyi到S. miensis的演替可能也存在于中国沿海地区。(C) 2004 Elsevier Ltd和INQUA。版权所有。
Stegodontids, elephant-like proboscideans, flourished in the Neogene and Quaternary of Asia. The most significant recent finding in the study of stegodontids is the new stegodons and stegolophodons fossils from Nakhon Ratchasima, Thailand and Yuanmou Basin, Yunnan. Those specimens show a transition from stegolophodons to stegodons and support the idea that stegodons originated in Asia.Evolution of island forms from the mainland ancestral one is best documented in the Japanese islands. The following succession is present in Japan: S. zdanskyi, S. miensis, an intermediate form between S. miensis and S. aurorae, S. aurorae, and S. orientalis. The former three taxa represent a single lineage. The succession from S. zdanskyi to S. miensis may have been present also in the coastal area of China. (C) 2004 Elsevier Ltd and INQUA. All rights reserved.