宽臼兽科学名Eurymylidae)是一灭绝单齿类。大部分学者都认为牠们是所有现今啮齿目的基底,且是啮齿目最后共同祖先的祖先。但是认识较多的原古兔属晓鼠属晨光兽属菱臼兽属似乎是一个非啮齿目直接祖先的单系群[1]另外有指晓鼠属、晨光兽属及菱臼兽属是属于同一分支,拥有独特的头颅骨齿式特征。应分类为Rhombomylidae。[2]宽臼兽科只在亚洲被发现。

宽臼兽科
化石时期:早古新世至中始新世
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 哺乳纲 Mammalia
目: 啮齿目 Rodentia
科: 宽臼兽科 Eurymylidae
Matthew, Granger, & Simpson, 1929

分类

编辑

以下是宽臼兽科的分类:[3][4][2]

参考

编辑
  1. ^ Meng, J., Y. Hu, C. Li. The osteology of Rhombomylus (Mammalia, Glires): implications for phylogeny and evolution of Glires. Bulletin of the American Museum of Natural History. 2003, 275: 1–247. 
  2. ^ 2.0 2.1 Huang, X., C. Li, M.R. Dawson, and L. Liu. Hanomys malcolmi, a new simplicidentate mammal from the Paleocene of central China: its relationships and stratigraphic implications. Bulletin of Carnegie Museum of Natural History. 2003, 36 (1): 81–9. 
  3. ^ McKenna, Malcolm C., and Bell, Susan K. Classification of Mammals Above the Species Level. New York: Columbia University Press. 1997: 631 pp. ISBN 0-231-11013-8. 
  4. ^ Ting, S., J. Meng, M.C. McKenna, and C. Li. The osteology of Matutinia (Simplicidentata, Mammalia) and its relationship to Rhombomylus. American Museum Novitates. 2002, 3371: 1–33.