''Prolimnocyon'' ("before ''

Limnocyon ''Limnocyon'' ("swamp dog") is an extinct paraphyletic genus of limnocyonid hyaenodonts that lived in North America during the middle Eocene. Fossils of this animal have been found in California, Utah and Wyoming Wyoming () is a U.S. sta ...

''") is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

paraphyletic In taxonomy (general), taxonomy, a group is paraphyletic if it consists of the group's most recent common ancestor, last common ancestor and most of its descendants, excluding a few Monophyly, monophyletic subgroups. The group is said to be pa ...

genus of limnocyonid hyaenodonts that lived in Asia and

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

during the late Paleocene to middle Eocene. ''Prolimnocyon chowi'' is the earliest known member of the hyaenodontid family Limnocyonidae.

Phylogeny

The phylogenetic relationships of genus ''Prolimnocyon'' are shown in the following cladogram.M. Morlo & G. F. Gunnell (2003.
"Small Limnocyonines (Hyaenodontidae, Mammalia) From the Bridgerian Middle Eocene of Wyoming: ''Thinocyon'', ''Prolimnocyon'' And ''Iridodon'', New Genus."
Contributions from the Museum of Paleontology, University of Michigan 31(2):43-78M. Morlo and G. F. Gunnell (2005.) "New species of ''Limnocyon'' (Mammalia, Creodonta) from the Bridgerian (middle Eocene)." Journal of Vertebrate Paleontology 25(1):251-255

References

Hyaenodonts Eocene mammals Paleocene mammals Paleogene mammals of North America Paleogene mammals of Asia Paleocene first appearances Prehistoric placental genera {{paleo-mammal-stub