Phlaocyon annectens

Phlaocyon annectens is an extinct species of the genus Phlaocyon, belonging to the subfamily Borophaginae and tribe Phlaocyonini, a canid endemic to central and western North America from the Late Oligocene to Early Miocene living 24.6—20.8 mya and existed for approximately 4.2 million years.

Phlaocyon annectens Temporal range: Oligocene–Miocene PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Carnivora
Family:	Canidae
Subfamily:	†Borophaginae
Tribe:	†Phlaocyonini
Genus:	†Phlaocyon
Species:	†P. annectens
Binomial name
†Phlaocyon annectens Peterson 1907, p. 53
Synonyms
Nothocyon annectens Peterson 1907 Bassariscops willstoni

Taxonomy

Phlaocyon annectens was named by Peterson 1907. Its type locality is Beardog Hill, which is in a Harrisonian fluvial sandstone in the Upper Harrison Beds Formation of Nebraska. It was recombined as Phlaocyon annectens by Vanderhill (1980) and Wang, Tedford & Taylor 1999.

Morphology

Body mass

Legendre & Roth 1988 estimated the body mass of two specimens to be 1.81–1.87 kilograms (4.0–4.1 lb).

Fossil distribution

• Castolon (TMM 40635), Brewster County, Texas ~24.8—20.6 Ma.[1]
• American Museum-Cook Quarry, Sioux County, Nebraska ~24.8—20.6 Ma.[2]
• Van Tassel, Niobrara County, Wyoming ~24.8—20.6 Ma.
• Beardog Hill, Upper Harrison Beds Formation, Sioux County, Nebraska ~24.8—20.6 Ma.

References

Notes

1. "Castolon (TMM 40635) (of the United States)". Fossilworks. Retrieved September 20, 2014.
2. "American Museum-Cook Quarry (of the United States)". Fossilworks. Retrieved September 20, 2014.

Sources

• Legendre, S.; Roth, C. (1988). "Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia)". Historical Biology. 1 (1): 85–98. doi:10.1080/08912968809386468.CS1 maint: ref=harv (link)
• Martin, L.D. 1989. Fossil history of the terrestrial carnivora. Pages 536 - 568 in J.L. Gittleman, editor. Carnivore Behavior, Ecology, and Evolution, Vol. 1. Comstock Publishing Associates: Ithaca.
• Peterson, O. A. (1907). "The Miocene beds of western Nebraska and eastern Wyoming and their vertebrate faunae". Annals of the Carnegie Museum. 4: 21–72. Retrieved September 20, 2014.CS1 maint: ref=harv (link)
• Wang, X.; Tedford, R. H.; Taylor, B. E. (1999). "Phylogenetic systematics of the Borophaginae (Carnivora, Canidae)". Bulletin of the AMNH. 243. hdl:2246/1588.CS1 maint: ref=harv (link)