Earliest Miocene hominoid from Southeast Asia

DOI Web Site Web Site 被引用文献4件

抄録

<jats:title>Abstract</jats:title><jats:p>A new hominoid fossil site, Chiang Muan in northern Thailand, yielded the first finding of a large‐bodied Miocene hominoid in Southeast Asia. This specimen (CMu6‐1′00) was preliminarily reported by Kunimatsu et al. ([<jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib26">2000a</jats:ext-link>] Primate Res. 16:299). Later, Chaimanee et al. ([ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib7">2003</jats:ext-link>] Nature 422:61–65) reported additional hominoid teeth from the same site, but all of them were collected from younger deposits (the Upper Lignite Member, in Nagaoka and Suganuma [ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib39">2002</jats:ext-link>] Primate Res 18:159–164). The specimen described here (CMu6‐1′00) was recovered from the Lower Lignite Member (Nagaoka and Suganuma [ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib39">2002</jats:ext-link>] Primate Res <jats:italic>18:</jats:italic>159–164), which is probably several hundred thousand years older than the Upper Lignite Member (Suganuma et al. [ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib61">2002</jats:ext-link>] Primate Res. <jats:italic>18:</jats:italic>165–173). This article provides a detailed description of this hominoid specimen and paleontological/geological data of the fossil site at Chiang Muan. The hominoid specimen (CMu6‐1′00) is an isolated upper molar (right M1 or M2), similar in size to modern orangutans (<jats:italic>Pongo pygmaeus</jats:italic>). This upper molar has low and voluminous cusps, relatively thick enamel, and relatively low relief of the dentine/enamel junction, with only a faint remnant of the lingual cingulum. The age of Chiang Muan is estimated to be the latest Middle Miocene (ca. 11–12 Ma), based on the mammalian fossils (Nakaya et al. [ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib41">2002</jats:ext-link>] Primate Res. <jats:italic>18:</jats:italic>131–141) and paleomagnetic study (Suganuma et al. [ <jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#bib61">2002</jats:ext-link>] Primate Res. <jats:italic>18:</jats:italic>165–173). This suggests that the Chiang Muan Hominoid in the present study is an earlier member of Eastern Eurasian Miocene hominoids. Am J Phys Anthropol, 2003. © 2003 Wiley‐Liss, Inc.</jats:p>

収録刊行物

被引用文献 (4)*注記

もっと見る

関連プロジェクト

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ