Tomarctus: Difference between revisions
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|fossil_range = early to middle [[Miocene]] |
|fossil_range = early to middle [[Miocene]] |
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|regnum = [[Animal]]ia |
|regnum = [[Animal]]ia |
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| image =Borophagus,_Aelurodon,_Tomarctus,_and_Cormocyon.jpg |
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| image = Osteoborus cyonoides, Aelurodon taxoides, Tomarctus temerarius, and Cormocyon leptodus.jpg |
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| image_caption = ''Tomarctus temerarius'' skull (second from the bottom) |
| image_caption = ''Tomarctus temerarius'' skull (second from the bottom) |
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Revision as of 23:54, 6 April 2009
| Tomarctus Temporal range: early to middle Miocene
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| Tomarctus temerarius skull (second from the bottom) | |
| Scientific classification | |
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| Genus: | †Tomarctus Cope, 1873
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| Type species | |
| †Tomarctus brevirostris | |
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Tomarctus ("cutting bear") is an extinct genus of canine which inhabited most of North America during the Early Miocene to Middle Miocene 23 Mya to 16 Mya.
Tomarctus is derived from the Nothocyon and gave rise to Borophaginae, a short-face, heavy-jawed canine usually massive in size. Tomarctus shared its period of time with a variety of bear dogs like the giant mustelid genus of bone-crushing canidae. As the bear dogs and giant mustelids became extinct, Tomarctus further radiated to fill a line of dogs which filled the fruit eating and bone-crushing hyena-like, large bone-crushing niches.
Species within Tomarctus are T. brevirostris (synomymous Aelurodon francisi, Aelurodon simulans), T. hippophaga.
References
- ^ Wang, Xiaoming (1999-11-17). "Phylogenetic systematics of the Borophaginae" (PDF). Bulletin of the American Museum of Natural History. 243. Retrieved 2007-07-08.
{{cite journal}}: Unknown parameter|coauthors=ignored (|author=suggested) (help)
- Martin, L.D. 1989. Fossil history of the terrestrial carnivora. Pages 536 - 568 in J.L. Gittleman, editor. Carnivore Behavior, Ecology, and Evolution, Vol. 1. Comstock Publishing Associates: Ithaca.
- Tedford, R.H. 1978. History of dogs and cats: A view from the fossil record. Pages 1 - 10 in Nutrition and Management of Dogs and Cats. Ralston Purina Co.: St. Louis.
- - Bio One Data Base - Tomarctus
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