Nestoritherium Explained

Nestoritherium is an extinct genus of chalicothere; it has been dated to have lived from the late Miocene to the Early Pleistocene (11.6–0.781 mya).[1] [2] [3] This range makes Nestoritherium one of the most recently dated chalicotheres. It has been found in fossil sites in Myanmar and China.[3]

The genus Nestoritherium was erected by German paleontologist Johann Jakob Kaup in 1859 for the species then known as Chalicotherium sivalense,[4] itself named in 1843 by Falconer and Cautley from early Pleistocene material from India. The shortened faced and brachyodont dentition suggests it belongs to the subfamily Chalicotheriinae.[5]

Nestoritherium fuguense was named from partial lower jaw and palate material from Miocene beds in Fugu County, China in 2014.[6]

Material consisting of a fragmentary upper and lower molar recovered from the (early Pleistocene) Irrawaddy Formation in Myanmar has been referred to the genus Nestoritherium.[7] A femur of possible chalicothere origin was recovered from Pliocene deposits in Yenangyaung in 1897.[8]

Notes and References

  1. Web site: A NEW SPECIES OF CHALICOTHERIINAE (PERISSODACTYLA,MAMMALIA) FROM THE LATE MIOCENE IN THE LINXIA BASIN OF GANSU,CHINA--《Vertebrata PalAsiatica》2012年01期. en.cnki.com.cn. 2016-04-19.
  2. Web site: New Chalicothere Species Found From the Late Miocene of the Linxia Basin of Gansu, China----Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences. english.ivpp.cas.cn. 2016-04-19.
  3. Web site: Fossilworks: Nestoritherium. fossilworks.org. 17 December 2021.
  4. 10.1093/jmammal/16.3.233. The Proper Use of the Generic Name Nestoritherium. Journal of Mammalogy. 16. 3. 233–234. 1935. Colbert. E. H..
  5. Web site: New Chalicothere Species Found From the Late Miocene of the Linxia Basin of Gansu, China . Chinese Academy of Sciences . 2012.
  6. New chalicothere materials from the Late Miocene of Fugu, Shaanxi, China . 2014 . Xue, Xiang-Xu . Deng, Tao . Coombs, Margery . Zhang, Yun-Xiang . Vertebrata PalAsiatica . 52 . 401–426 .
  7. Tsubamoto, Takehisa . Zin-Maung-Maung-Thein . ThaungHtike . Egi, Naoko . Chit-Sein . Maung-Maung . Takai, Masanaru . Discovery of chalicothere and Dorcabune from the upper part (lower Pleistocene) of the Irrawaddy Formation, Myanmar . Asian Paleoprimatology . 2006 . 4 . 137–142 .
  8. Hooijer . Dirk Albert . A Femur of a (?) Chalicothere from the Pliocene of Upper Burma . Journal of Mammalogy . 1951 . 32 . 4 . 467–468 . 10.1093/jmammal/32.4.467.

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