First middle Miocene sivaladapid primate from Thailand

Sivaladapids are a group of Asian adapiform primates that were previously documented from deposits dating to the middle Eocene through the late Miocene in Pakistan, India, Myanmar, Thailand, and China. The group is notable for the persistence of three genera, Sivaladapis, Indraloris and Sinoadapis,...

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Bibliographic Details
Published in:Journal of human evolution 2008-03, Vol.54 (3), p.434-443
Main Authors: Chaimanee, Yaowalak, Yamee, Chotima, Tian, Pannipa, Chavasseau, Olivier, Jaeger, Jean-Jacques
Format: Article
Language:English
Subjects:
Animals
Dentition
Earth Sciences
Environmental studies
Evolutionary anthropology
Fauna
Fossils
Geological Phenomena
Geology
Loris
Mandible - anatomy & histology
Metal industry
Methodology and general studies
Miocene
Morphology
Paleontology
Prehistory and protohistory
Primates
Primates - anatomy & histology
Sciences of the Universe
Sivaladapid
Sivaladapids
Southeast Asia
Strepsirrhine
Thailand
Typology, technology and attribute analysis
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Summary:Sivaladapids are a group of Asian adapiform primates that were previously documented from deposits dating to the middle Eocene through the late Miocene in Pakistan, India, Myanmar, Thailand, and China. The group is notable for the persistence of three genera, Sivaladapis, Indraloris and Sinoadapis, into the late Miocene. In Thailand, sivaladapids were previously documented only from late Eocene deposits of the Krabi mine. Here, we describe the first Southeast Asian Miocene sivaladapid, Siamoadapis maemohensis gen. et sp. nov. from a 13.3 to 13.1 Ma lignite layer from the Mae Moh coal mine, Thailand. It differs from other Miocene sivaladapids by its distinctly smaller size and in features of the dentition. This discovery enhances the paleoecological diversity of the middle Miocene primate fauna of Thailand, which now includes sivaladapids, a loris, tarsiids, and hominoids. In this respect, the fossil primate community from the middle Miocene of Thailand is similar in its composition to roughly contemporaneous assemblages from southern China, India, and Pakistan. However, the Thai fossils represent a distinct genus, suggesting a different biogeographic province with distinctive paleoenvironments.
ISSN:0047-2484
1095-8606
DOI:10.1016/j.jhevol.2007.10.001