Tephrocyon

Tephrocyon is an extinct genus of the Borophaginae and a small to medium sized terrestrial canine (Bear-dog) which inhabited most of North America during the Barstovian stage of the Middle Miocene 16.3—13.6 Ma, existing for approximately 2.7 million years.^[1]

Morphology

Fossil specimens of two individuals' body mass were examined by Legendre and Roth. The first specimen was estimated to weigh 12.9 kg (28 lb). The second specimen was estimated to weigh 12.1 kg (27 lb).^[2]

Fossil record

It is a rarely found genus, with fossil deposits only occurring in western Nebraska, Wyoming, New Mexico and north Florida. Desmocyon contains one species: Tephrocyon rurestris. It was first named by Merriam 1909.

Sister genera

Cormocyon, Desmocyon, Euoplocyon, Metatomarctus, Microtomarctus, Protomarctus, and Psalidocyon.

References

• The Biology and Conservation of Wild Canids by David W. Macdonald and Claudio Sillero-Zubiri; page 42 ISBN 0198515561

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