Amphicyonidae is an extinct family of terrestrial carnivorans belonging to the suborder Caniformia. They first appeared in North America in the middle Eocene, spread to Europe by the late Eocene, and further spread to Asia and Africa by the early Miocene. They had largely disappeared worldwide by the late Miocene, with the latest recorded species at the end of the Miocene in Africa. They were among the first carnivorans to evolve large body size. Amphicyonids are colloquially referred to as "bear-dogs".
Amphicyon is an extinct genus of large carnivorans belonging to the family Amphicyonidae, subfamily Amphicyoninae, from the Miocene epoch. Members of this family received their vernacular name for possessing bear-like and dog-like features. They ranged over North America, Europe, Asia, and Africa.
Miocyon is an extinct genus of placental mammals from clade Carnivoraformes, that lived in North America from the early to late Eocene.
Daphoenodon is an extinct genus of terrestrial carnivore, which lived in the early Miocene and belonged to the family Amphicyonidae of the suborder Caniformia. The species of Daphoenodon are characterized by limbs that are specialized in fore and aft movement, as well as a body alignment that results in a lengthened stride.
Agnotherium is a genus of large sized carnivoran mammals, belonging to the Amphicyonidae, which has been found in Western Europe, and possibly China and Northern Africa, and lived during the Late Miocene epoch. Despite only being known from fragmentary remains, the genus notable for hypercarnivorous adaptions, which have been said to represent the "apex" among its family.
Brachycyon is an extinct genus of terrestrial carnivores belonging to the suborder Caniformia, family Amphicyonidae, which inhabited Eurasia and North America.
Haplocyon is an extinct genus of terrestrial carnivores belonging to the Carnivoran suborder Caniformia, family Amphicyonidae named by Schlosser in 1901. It lived in Europe between 28.4 and 23.03 Mya, during the Late Oligocene.
Haplocyonoides is an extinct genus of terrestrial carnivores belonging to the suborder Caniformia, family Amphicyonidae, and which inhabited Europe from the Early Miocene subepoch —(16.9 Mya). Haplocyonoides existed for approximately 3.1 million years.
Haplocyonopsis is an extinct genus of terrestrial carnivores belonging to the suborder Caniformia, family Amphicyonidae.
Pseudocyonopsis is a member of the extinct family Amphicyonidae, a terrestrial carnivore belonging to the order Caniformia.
Ysengrinia is an extinct genus of carnivoran in the family Amphicyonidae (beardogs), which lived in Europe, Asia, and North America during the Early Miocene. It was also reported from Egypt and Namibia, but this material has been reassigned to other genera of beardogs.
Harpagophagus is an extinct genus of large, mostly carnivorous bone-crushing mammals of the family Amphicyonidae endemic to Europe during the Oligocene living from 33.9 to 23.03 Ma and existed for approximately 10.87 million years.
Arctoidea is a clade of mostly carnivorous mammals which include the extinct Hemicyonidae (dog-bears), and the extant Musteloidea, Pinnipedia, and Ursidae (bears), found in all continents from the Eocene, 46 million years ago, to the present. The oldest group of the clade is the bears, as their CMAH gene is still intact. The gene became non-functional in the common ancestor of the Mustelida. Arctoids are caniforms, along with dogs (canids) and extinct bear dogs (Amphicyonidae). The earliest caniforms were superficially similar to martens, which are tree-dwelling mustelids. Together with feliforms, caniforms compose the order Carnivora; sometimes Arctoidea can be considered a separate suborder from Caniformia and a sister taxon to Feliformia.
Amphicyanis is an extinct genus of terrestrial carnivores belonging to the suborder Caniformia, family Amphicyonidae, and which inhabited Eurasia and North America.
Gustafsonia is an extinct genus of carnivoran belonging to the family Amphicyonidae. The type species, Gustafsonia cognita, was described in 1986 by Eric Paul Gustafson, who originally interpreted it as a miacid and named it Miacis cognitus. It was subsequently considered to be the only species of the diverse genus Miacis that belonged to the crown-group Carnivora, within the Caniformia, and it was ultimately assigned to the family Amphicyonidae. The type specimen or holotype was discovered in Reeve's bonebed, western Texas, in the Chambers Tuff Formation in 1986. The University of Texas holds this specimen. It is the only confirmed fossil of this species.
Daphoenictis is an extinct cat-like genus of the family Amphicyonidae (bear-dogs), subfamily Daphoeninae, endemic to North America during the Late Eocene subepoch, existing for approximately 3.3 million years. Daphoenictis' geographical range was mid-western North America; from central Canada, to Texas, U.S. Only one species is known, Daphoenictis tedfordi.
Angelarctocyon is an extinct genus of Amphicyonidae, which belongs to the order Carnivora.
Magericyon is an extinct genus of Amphicyonid ("bear-dog") that lived during the Miocene 10-9 Ma in what is now Spain.
Tartarocyon is an extinct genus of Amphicyonidae, who lived during the late Middle Miocene. It was described after fossilized remains found in Sallespisse, France. Despite the scarceness of its fossil remains, being only known from the holotype mandible, its body mass has been estimated to be close to 200 kilograms, far from its closest relative, Cynelos, and making it one of the largest terrestrial predators of Miocene Europe. T. cazanavei is the only species included in the genus. The genus was named after a southwestern French Pyrenees legend of a man eating giant ; the species name honors the owner of the terrain in which the holotype has been discovered.
Thaumastocyoninae is an extinct subfamily of amphicyonids, large terrestrial carnivores, which inhabited what is now Europe during the Miocene epoch. The subfamily was erected by Hürzeler (1940), and is defined by the complete suppression of m1 metaconid, reduction of the premolars, except the p4, which is reinforced, and the oblique abrasion of the teeth, and the possession of hypercarnivorous tendencies. Thaumastocyonines are poorly known, with only about 65 dental specimens, most of those isolated teeth, being known as of 2020, although more complete remains have recently been discovered.
