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Temporal range: Oligocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Carnivora
Suborder: Caniformia
Superfamily: Arctoidea
Family: Ursidae
Genus: Amphicynodon
Filhol (1881)

A. helveticus


Cynodon Aymard 1848

Amphicynodon is an extinct genus of mammal of the family Ursidae, endemic to Europe and Asia during the Oligocene, living from ~33.9—28.4 Mya, existing for approximately 5.5 million years.

Amphicynodon is a small basal member of Ursidae similar to early Mustelids in both size and existence.


Amphicynodon was named by Filhol (1881). It was assigned to Phocoidea by McKenna and Bell (1997) then to Ursidae by Filhol (1881) and Hunt (1998); and to Ursidae also by Wang et al. (2005).[1][2]

Fossil distribution[edit]

Sites and specimen ages:


  • Rose, Kenneth David, The beginning of the age of mammals,The Johns Hopkins University Press (September 26, 2006)