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The late Pleistocene (MIS 4) mammal assemblage of Tham Prakai Phet (Thailand): a new biochronological benchmark for mainland Southeast Asia

ชื่อนักวิจัย

Arnaud Filoux , Athiwat Wattanapituksakul, Carole Lespes , Jeremy Martin, Gaël Becam, Romain Liard, Cholawit Thongcharoenchaikit, Rainer Grün, Mathieu Duval

หมวดหมู่ผลงาน

Animal Science and Animal Products, Natural Resources, Earth and Environment, Archaeology

ประเภทผลงาน

Conference Abstract

บทคัดย่อ

The Tham Prakai Phet (literally, "the cave of glittering diamonds") is a long karstic cavity formed in a Permian dolomitic limestone, located in the Chaiyaphum Province, Northeastern Thailand. The presence of large mammal fossils in the deposits has been reported in the1990s'. Subsequent surveys performed between 2011-2013 by a team from the Palaeontological Research and Education Centre and from the Mahasarakham University led to the discovery of additional isolated teeth. Here, we present the results of the first excavation conducted between 2014 and 2015 in a small gallery of the network that preserved breccia deposits, containing a dense quantity of faunal remains. More than 1,000 fossil remains were collected from a 4m2 excavation. This rich collection of mammal fossils is composed mostly of isolated teeth and few badly preserved bones. Palaeontological analysis reveals a high diversity of taxa including Primates, Carnivores, Artiodactyla, Perissodactyla and Rodents. The mammal association contained archaic species such as Ailuropoda melanoleuca baconi, Crocuta crocuta ultima, as well as taxa still extant today in the Indochinese subregion. Direct U-series and ESR dating analyses performed on three bovid teeth gave an age range between 56-79 ka. This now well dated mammal association provides a new biochronological benchmark for the Southeast Asian mammal record at the beginning of the Late Pleistocene. Additionally, isotope analyses (_13C, _18O,...) performed on tooth enamel samples provided further insights into the palaeoenvironmental conditions during MIS-4. Finally, taphonomic studies showed the important role played by rodents and carnivores in the constitution and modication of the mammal assemblage, in combination with gravity-flow deposit process.

ชื่องานประชุมวิชาการ

The 5th International Paleontological Congress Paris

สถานที่

Paris, France

วันที่

9 - 13 July 2018

หน้า

655

สถานที่พิมพ์

Paris

สำนักพิมพ์

International Paleontological Association