Osbornodon

Osbornodon ("Osborn's tooth") is an extinct genus of canid that were endemic to North America and which lived from the Oligocene to the Early Miocene, 33.9—15.97 Ma (AEO), existing for approximately 18 million years. [1] It was the last surviving genus of the hesperocyonine subfamily, the oldest subfamily of canids.[2]

Osbornodon
Temporal range: Early Oligocene–Early Miocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Subfamily: †Hesperocyoninae
Genus: †Osbornodon
Wang, 1994
Type species
†Osbornodon fricki
Species

See text

Approximate range of Osbornodon based on fossil distribution

Species

Seven known species of Osbornodon existed:

  • Osbornodon brachypus Cope 1881
  • Osbornodon fricki Wang 1994 (18 Ma)
  • Osbornodon iamonensis Sellards 1916 (21 Ma)
  • Osbornodon renjiei Wang 1994 (33 Ma)
  • Osbornodon sesnoni Macdonald 1967 (32 Ma)
  • Osbornodon scitulus Hay 1924
  • Osbornodon wangi Hayes 2000

The earlier species were about the size of a small fox, and had teeth suggesting an omnivorous or hypocarnivorous diet. Later species were larger and more actively predaceous. The last species, O. fricki, was about the size of a large wolf.[2]

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References
  1. Paleobiology Database: Osbornodon.
  2. Wang, Xiaoming; Tedford, Richard H. (2008). Dogs, Their Fossil Relatives and Evolutionary History. Columbia. p. 31. ISBN 978-0-231-13528-3.
  • R. M. Nowak. 1991. Walker's Mammals of the World. Maryland, Johns Hopkins University Press (edited volume) II (K. Behrensmeyer/K. Behrensmeyer/J. Alroy)


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