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Philotrox is an extinct monospecific genus of the Hesperocyoninae subfamily of early canids native to North America. It lived during the Oligocene, 30.8—26.3 Ma, existing for approximately 5 million years.[1] In form, it was intermediate between the small Cynodesmus and the later Enhydrocyon, the first hypercarnivorous, "bone-cracking", canid.[2]

Temporal range: Oligocene
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Family: Canidae
Subfamily: Hesperocyoninae
Genus: Philotrox
Merriam, 1906
P. condoni
Binomial name
Philotrox condoni
Merriam, 1906


  1. ^ Philotrox
  2. ^ Wang, Xiaoming; Tedford, Richard H. (2008). Dogs, Their Fossil Relatives and Evolutionary History. Columbia. p. 25. ISBN 978-0-231-13528-3.