Two new tritylodontids (Synapsida, Cynodontia, Mammaliamorpha) from the Upper Jurassic, southwestern Mongolia

被引:1
作者
Velazco, Paul M. [1 ]
Buczek, Alexandra J. [2 ,3 ]
Novacek, Michael J. [1 ]
机构
[1] Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA
[2] Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
[3] Amer Museum Nat Hist, Richard Gilder Grad Sch, New York, NY 10024 USA
基金
美国国家科学基金会;
关键词
MAMMAL-LIKE REPTILE; PHYLOGENY; BIENOTHEROIDES; POSTCANINE; SICHUAN; GENUS;
D O I
暂无
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
Two new genera and species of Tritylodontidae, Shartegodon altai and Nuurtherium baruunensis, are described and compared with other known tritylodontids. The new taxa are represented by two partial skulls and, in the case of Nuurtherium, postcranial elements. They were collected from the lower part of the Ulan Malgait Sequence (Upper Jurassic) in the Shar Teg locality, Gobi-Altai Aimag, southwestern Mongolia. The upper postcanine teeth of these two genera have unique cusp formulae that differentiate them from other tritylodontids. As has been suggested for most tritylodontids in general, these two new genera may have been herbivorous.
引用
收藏
页码:1 / 36
页数:36
相关论文
共 73 条
  • [1] [Anonymous], 2000, ASIAN PALEOPRIMATOL
  • [2] [Anonymous], 2 GONDW S P
  • [3] Butler P. M., 1939, Annals & Magazine of Natural History, V4, P514
  • [4] Charlesworth E., 1855, 24 M BRIT ASS ADV SC, P80
  • [5] Chow M., 1959, VERTEBRAT PALASIATIC, V3, P7
  • [6] Chow M., 1962, VERTEBRAT PALASIATIC, V4, P365
  • [7] DISTINCTIVE MAMMAL-LIKE REPTILE FROM MEXICO AND ITS BEARING ON THE PHYLOGENY OF THE TRITYLODONTIDAE
    CLARK, JM
    HOPSON, JA
    [J]. NATURE, 1985, 315 (6018) : 398 - 400
  • [8] Cope E.D., 1844, AM NAT, V18, P686
  • [9] CUI GH, 1981, VERTEBRAT PALASIATIC, V19, P5
  • [10] CUI GH, 1987, VERTEBRAT PALASIATIC, V25, P245