Amphicyoninae

Amphicyonidae Temporal range: 22.4–4.9 Ma PreЄ Є O S D C P T J K Pg N Oligocene - Miocene
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Suborder:	Caniformia
Superfamily:	Arctoidea
Family:	†Amphicyonidae
Subfamily:	†Amphicyoninae Trouessart (1885)
Genus & Tribes
†Amphicyon genus †Cynelos genus †Ischyrocyon genus †Pliocyon genus †Pseudocyon genus †Ysengrinia genus †Thaumastocyonini tribe

Amphicyoninae is a subfamily of extinct Amphicyonidae, large terrestrial carnivores (bear-dogs) belonging to the suborder Caniformia (meaning "dog-like") and which inhabited North America, Europe, Eurasia, Asia. and Africa from ~22.4—4.9 Ma. Amphicyoninae existed for approximately ~17.5 million years.

Amphicyoninae was named by Trouessart (1885). It was assigned to Canidae by Matthew (1902); to Ursidae by Ginsburg (1977); and to Amphicyonidae by Hunt (1998).

Better known genera include:

• Amphicyon, found in both Europe and N. America
• Cynelos, synonyms include Absonodaphoenus and Hecubides, endemic to N. America
• Ischyrocyon, Hadrocyon is a synonym, endemic to N. America
• Pliocyon, endemic to N. America
• Pseudocyon, Amphicyonopsis is a synonym, endemic to Europe and N. America
• Thaumastocyonini, a tribe endemic to Europe
• Ysengrinia, found in both Europe and N. America

Fossil distribution

Specimens have been recovered from:

• Midway Site, Gadsden County, Florida ~18.9—18.8 Ma.
• Rabbitt Creek Site, Meagher County, Montana ~21.7—18 Ma.
• Grimes Landing Site, King William County, Virginia ~17.6 Ma.
• Arrisdrift, Namibia ~23.03—11.6 Ma.
• Les Beilleaux, France ~20—16.9 Ma.