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Middle Miocene bovids from Mae Moh Basin, Northern Thailand: The first record of the genus Eotragus from Southeast Asia

100%

Suraprasit K., Chaimanee Y., Chavasseau O., Jaeger J.-J.

Acta Palaeontologica Polonica

2015

tom 60

nr 1

We describe the first bovid fossils from the late middle Miocene (13.4–13.2 Ma) of the Mae Moh Basin of Northern Thailand, and assign the material to the new species Eotragus lampangensis sp. nov., Eotragus cf. lampangensis, and an indeterminate bovid. Our material represents the first report of Eotragus from Southeast Asia, thus greatly extending the geographic distribution of this genus across the Old World continents. While comparisons of the Southeast Asian specimens with abundant material of E. clavatus from Sansan (France) and E. aff. clavatus from Tarazona de Aragón (Spain) indicate a high degree of intraspecific variation within single species of Eotragus, the existence of two distinct taxa at Mae Moh remains a possibility. Based on previous carbon isotope studies of Mae Moh herbivore tooth enamel, Eotragus lampangensis sp. nov. foraged predominantly in an ecotone between grassland and forest.

First record of a chalicothere from the Miocene of Myanmar

64%

Chavasseau O., Chaimanee Y., Coster P., Emonet E.-G., Soe A. N., Kyaw A. A., Maung A., Rugbumrung M., Shwe H., Jaeger J.-J.

Acta Palaeontologica Polonica

2010

tom 55

nr 1

Here we describe the first record of a chalicothere from the Miocene of Myanmar. The chalicothere, documented by a partial mandible, was unearthed from the lower portion of the Irrawaddy Formation in the region of Magway, Central Myanmar. The Burmese material belongs to an early late Miocene fauna which recently yielded hominoid remains attributed to Khoratpithecus. The specimen, which is attributed to a chalicotheriine, does not reliably match with any described Miocene Eurasian species of this subfamily, suggesting the possibility it belongs to a new taxon. The discovery of a chalicotheriine in the surroundings of Magway contributes to the hypothesis that closed habitats were an important component of the paleoenvironment of Khoratpithecus.

Ograniczanie wyników

2 Acta Palaeontologica Polonica

2 Chaimanee Y.

2 Chavasseau O.

2 Jaeger J.-J.

1 Coster P.

1 Emonet E.-G.

1 Kyaw A. A.

1 Maung A.

1 Rugbumrung M.

1 Shwe H.

1 Soe A. N.

1 Suraprasit K.

1 2015

1 2010

Wyniki wyszukiwania

Middle Miocene bovids from Mae Moh Basin, Northern Thailand: The first record of the genus Eotragus from Southeast Asia

First record of a chalicothere from the Miocene of Myanmar