New hyaenodonta (Mammalia) from the middle Eocene of Myanmar

Louis de BONIS, Floréal SOLÉ, Yaowalak CHAIMANEE, Aung Naing SOE, Chit SEIN, Vincent LAZZARI, Olivier CHAVASSEAU & Jean-Jacques JAEGER

en Comptes Rendus Palevol 17 (6) - Pages 357-365

Published on 31 July 2018

The middle Eocene Pondaung Formation in Myanmar has yielded a rich mammalian fauna including several Primate taxa. Hyaenodonta are known by the genera Kyawdawia, Yarshea, Orienspterodon, and two other indeterminate taxa. We describe here new material of Kyawdawia, including some morphological details, a new species of the hypercarnivorous genus Propterodon and an indeterminate species, different from those described earlier in Myanmar, and characterized by a reduction of m3 and would belong to a third lineage with the same evolutionary trend as Galecyon and the Limnocyoninae. The hyainailourines (Orienspterodon) and hyaenodontines (Propterodon) are recorded for the first time in Southeast Asia and these subfamilies appeared in quasi the same time in Europe illustrating probably a profound change in the carnivorous fauna among Laurasia.


Hyaenodonta, Hyainailouridae, Hyaenodontidae, Pondaung Formation, Nova species

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