A new species of Bothriodontinae,Merycopotamus thachangensis(Cetartiodactyla, Anthracotheriidae) from the late Miocene of Nakhon Ratchasima, northeastern Thailand
| Autor: | Haruo Saegusa, Shinji Nagaoka, Hideo Nakaya, Rattanaphorn Hanta, Yutaka Kunimatsu, Benjavun Ratanasthien, Pratueng Jintasakul |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Journal of Vertebrate Paleontology. 28:1182-1188 |
| ISSN: | 1937-2809 0272-4634 |
| Popis: | Merycopotamus thachangensis, sp. nov. (Cetartiodactyla, Anthracotheriidae, Bothriodontinae) was discovered from a mined sand pit in Tha Chang village in Nakhon Ratchasima Province, northeastern Thailand. The specimen is a nearly complete cranium with left P3-M3 and right M1-M3. It is the first known Merycopotamus in Thailand. The new species has a nearly divided mesostyle with a remnant at the base. No small crest is developed from the buccal style on upper molars. The postparacrista and premetacrista are parallel, pointing buccally to distobuccally. The major palatine foramen is positioned at P2–P3. The naso-frontal suture is lobe-like. There is a single supraorbital foramen with a distinct groove. There is no contact between the nasal and lacrimal bones. M. thachangensis shows a mixture of derived and primitive features that distinguish it from the previously known species of Merycopotamus. The new Thai species might have evolved from M. medioximus in the early late Miocene of Siwaliks, though ... |
| Databáze: | OpenAIRE |
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