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2019 | 64 | 4 |
Tytuł artykułu

Discovery of a crocodyliform tooth from the upper Eocene Ergilin Dzo Formation, Mongolia

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Although the distribution of Asian crocodyliforms was extended northwards during the Paleocene–Eocene greenhouse world, the fossil record in northern Asia becomes scarce towards the end of the Eocene. We here report the first crocodyliform (an isolated tooth) from the upper Eocene Ergilin Dzo Formation of southeastern Mongolia, the mammalian fauna of which defines the Ergilian Asian Land Mammal Age. The conical non-recurved crown, the near complete root with the central resorption facet, and its late Eocene age suggest the crocodyliform affinity of the tooth. The current finding represents one of the northernmost occurrences of crocodyliforms in the upper Eocene of Asia (paleolatitude ca. 49°30’ N), and demonstrates that SE Mongolia probably met thermal requirements of crocodyliforms during the late Eocene.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
64
Numer
4
Opis fizyczny
p.775-778,fig.,ref.
Twórcy
autor
  • School of Resources and Environmental Engineering, Hefei University of Technology, 193 Tunxi Road, Baohe, Hefei, Anhui 230009, China
autor
  • Graduate School of Science and Engineering, Ehime University, 2-5 Bunkyo- cho, Matsuyama, Ehime 790-8577, Japan
  • Institute of Paleontology and Geology, Mongolian Academy of Sciences, P.O. Box 46/650, Chingeltei District-15160, Horoo-4, S. Danzan Street 3/1, Ulaanbaatar, Mongolia
autor
  • Institute of Paleontology and Geology, Mongolian Academy of Sciences, P.O. Box 46/650, Chingeltei District-15160, Horoo-4, S. Danzan Street 3/1, Ulaanbaatar, Mongolia
  • Institute of Paleontology and Geology, Mongolian Academy of Sciences, P.O. Box 46/650, Chingeltei District-15160, Horoo-4, S. Danzan Street 3/1, Ulaanbaatar, Mongolia
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Bibliografia
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