Metatomarctus
| Metatomarctus | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Family: | Canidae |
| Subfamily: | †Borophaginae |
| Tribe: | †Borophagini |
| Genus: | †Metatomarctus Wang, 1999 |
| Species: | †M. canavus
|
| Binomial name | |
| †Metatomarctus canavus (Simpson, 1932)
| |
Metatomarctus is an extinct genus of Borophaginae and a terrestrial canine which inhabited most of North America during the Early Hemingfordian stage of the Miocene epoch living 23.0—5.3 Mya, existing for approximately 17.7 million years[1]
Taxonomy
It was first described by Wang in 1999.
These carnivores hunted in packs, like modern canines, and may have preyed upon creatures such as Equus, rodents, and other smaller prey.
Morphology
Fossil specimens of two individuals' body mass were examined by Legendre and Roth. The first specimen was estimated to weigh 11.1 kg (24 lb). The second specimen was estimated to weigh 10.5 kg (23 lb).[2]
Sister genera
Cormocyon, Desmocyon, Euoplocyon, Microtomarctus, Protomarctus, Psalidocyon, and Tephrocyon.
Fossil distribution
- Thomas Farm Site, Gilchrist County, Florida, estimated age ~23.3—16.3 Mya.[3]
- Pollack Farm Site, Kent County, Delaware, estimated age ~20.6—16.3 Mya.
- Hackberry Wash, San Bernardino County, California, estimated age ~20.6—16.3 Mya.
- Rattlesnake Hills, Fremont County, Wyoming, estimated age ~23.0—5.3 Mya.
- High Rock Canyon aka UCMP V-110, Humboldt County, Nevada estimated age ~23.0—5.3 Mya.
- Ahren's Prospect, Elder Ridge, and Pebble Creek, Runningwater Formation, Dawes County, Nebraska, estimated age ~20.6—16.3 Mya.[4]
The genus contains one species: M. canavus. Other fossil locations: Maryland, Wyoming, New Mexico, and several in western Nebraska.[5]
References
- ^ PaleoBiologogy Database: Early Hemingfordian Age range and collections
- ^ S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology
- ^ www.flmnh.ufl.edu Archived 2008-05-15 at the Wayback Machine
- ^ Dawes County Collection, Paleobiology
- ^ PaleoBiology Database: Metatomarctus, basic information
General references
- Xiaoming Wang, Richard H. Tedford, Mauricio Antón, Dogs: Their Fossil Relatives and Evolutionary History, New York : Columbia University Press, 2008; ISBN 978-0-231-13528-3
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