New remains of primitive ruminants from Thailand: evidence of the early evolution of the Ruminantia in Asia

@article{Mtais2001NewRO,
  title={New remains of primitive ruminants from Thailand: evidence of the early evolution of the Ruminantia in Asia},
  author={Gr{\'e}goire M{\'e}tais and Yaowalak Chaimanee and Jean-Jacques Jaeger and St{\'e}phane Ducrocq},
  journal={Zoologica Scripta},
  year={2001},
  volume={30}
}
A new tragulid, Archaeotragulus krabiensis, gen. n. et sp. n., is described from the late Eocene Krabi Basin (south Thailand). It represents the oldest occurrence of the family which was previously unknown prior to the Miocene. Archaeotragulus displays a mixture of primitive and derived characters, together with the M structure on the trigonid, which appears to be the main dental autapomorphy of the family. We also report the occurrence at Krabi of a new Lophiomerycid, Krabimeryx primitivus… 
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Eocene bunoselenodont Artiodactyla from southern Thailand and the early evolution of Ruminantia in South Asia
TLDR
Dental remains of a new bunoselenodont artiodactyl are described from the late Eocene of Krabi, southern Thailand, adding to the Eocene record of early ruminants and lends support to the hypothesis that the Tragulidae represents one of the first offshoots in the evolutionary history of Ruminantia.
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Results indicate a close relationship of the new alligatorine taxon to Procaimanoidea, Arambourgia gaudryi, and Allognathosuchus polyodon, all of them being sister groups to the Alligator clade.
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A new small-sized fossil anthropoid primate from the Late Eocene Krabi locality in Thailand, Krabia minuta, is described, which shares several derived characters with the amphipithecids and displays several unique dental characters that have never been observed in other Eocene Asian anthropoids.
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It is shown that the genus Siamotragulus was not endemic to Asia as previously thought, and that a highly diverse guild of tragulids, including different members of the advanced selenodont clade, inhabited Africa as early as the Early Miocene (19–20 Ma).
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Several mammal taxa from the poorly known late Eocene locality of Bang Mark, Krabi Basin in southern Thailand are described, providing information on the affinities of several genera that were uncertain so far.
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The vast continent of Asia is thought to have played a major role in the origin and early differentiation of several extant groups of ungulate mammals, including artiodactyls (e.g. Beard, 1998).…
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