New hominoid mandible from the early Late Miocene Irrawaddy Formation in Tebingan area, central Myanmar
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- TAKAI MASANARU
- Primate Research Institute, Kyoto University, Inuyama
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- NYO KHIN
- Zaykabar Museum, Yangon
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- KONO REIKO T.
- Keio University, Yokohama
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- HTIKE THAUNG
- University of Yangon, Yangon
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- KUSUHASHI NAO
- Ehime University, Matsuyama
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- THEIN ZIN MAUNG MAUNG
- University of Mandalay, Mandalay
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<p>A new medium-sized hominoid mandibular fossil was discovered at an early Late Miocene site, Tebingan area, south of Magway city, central Myanmar. The specimen is a left adult mandibular corpus preserving strongly worn M2 and M3, fragmentary roots of P4 and M1, alveoli of canine and P3, and the lower half of the mandibular symphysis. In Southeast Asia, two Late Miocene medium-sized hominoids have been discovered so far: Lufengpithecus from the Yunnan Province, southern China, and Khoratpithecus from northern Thailand and central Myanmar. In particular, the mandibular specimen of Khoratpithecus was discovered from the neighboring village of Tebingan. However, the new mandible shows apparent differences from both genera in the shape of the outline of the mandibular symphyseal section. The new Tebingan mandible has a well-developed superior transverse torus, a deep intertoral sulcus (= genioglossal fossa), and a thin, shelf-like inferior transverse torus. In contrast, Lufengpithecus and Khoratpithecus each have very shallow intertoral sulcus and a thick, rounded inferior transverse torus. The characteristic morphology of the mandibular symphysis in the Tebingan specimen suggests a different taxon from Khoratpithecus. In central Myanmar at least two kinds of medium-sized hominoids were likely present in the early Late Miocene.</p>
収録刊行物
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- Anthropological Science
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Anthropological Science 129 (1), 87-98, 2021
一班社団法人 日本人類学会
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詳細情報 詳細情報について
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- CRID
- 1390569302468852608
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- NII論文ID
- 130008030469
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- NII書誌ID
- AA11307827
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- ISSN
- 13488570
- 09187960
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- NDL書誌ID
- 031611137
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 使用不可