Ischyrocyon
| Ischyrocyon | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Suborder: | Caniformia |
| Family: | Amphicyonidae |
| Subfamily: | Amphicyoninae |
| Genus: | †Ischyrocyon Matthew and Gidley (1904) |
| Species | |
| |
Ischyrocyon is an extinct genus of large, mostly carnivorous mammals (bone-crushers) known as bear dogs, of the family Amphicyonidae, subfamily Amphicyoninae, which inhabited North America during the Miocene living from ~14.2—11.7 Ma and existed for approximately 2.5 million years.[1]
Taxonomy
Ischyrocyon was named by Matthew and Gidley (1904). Its type is Ischyrocyon hyaenodus. It was assigned to Amphicyonidae by Matthew and Gidley (1904) and Carroll (1988); and to Amphicyoninae by Hunt (1998).[2]
Morphology
A single specimen was examined by Legendre and Roth for body mass.[3]
- 161.9 kg (360 lb). Based on Skull length another specimen was 410 kg(903 lb)
Fossil distribution
- Blair Junction, Esmeralda County, Nevada ~14.2—11.7 Ma.
- Hemicyon Quarry Site, San Bernardino County, California ~14.0 Ma.
- Adam Risley Ranch Site, Donley County, Texas ~12—11.7 Ma.
- WaKeeney (Unit C) Trego County, Kansas ~11.8—11.7 Ma.
- Olcott Hill, Sioux County, Nebraska ~11.9 Ma.
- Iron Canyon Site, Kern County, California ~11.8—11.9 Ma.
- Bluejay Quarry Site, Antelope County, Nebraska ~11.8 Ma.
References
- ↑ Paleobiology Database: Ischyrocyon Basic info.
- ↑ R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W.H. Freeman and Company
- ↑ S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology 1(1):85-98
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