Temporal range: Late Oligocene–Miocene
|Range of Cynarctoides roii based on fossil record|
Cynarctoides roii is an extinct species of Cynarctoides, belonging to the subfamily Borophaginae and tribe Phlaocyonini, a canid which inhabited west central North America from the Late Oligocene to Miocene living 30.8—20.6 mya and existed for approximately .
Cynarctoides roii was named by Macdonald (1963). It was recombined as Cormocyon roii by Xiaoming Wang and Richard H. Tedford (1992) and Wang and Fremd (1994); it was recombined as Cynarctoides roii by Wang et al. (1999).
- Specimen 1 was estimated to weigh 0.644 kg (1.4 lb).
- Specimen 2 was estimated to weigh 0.700 kg (1.5 lb).
- Sharps Site, Oglala Lakota County, South Dakota ~30.8—20.6 Ma.
- Horse Creek, Banner County, Nebraska ~30.8—20.6 Ma.
- J. R. Macdonald. 1963. The Miocene faunas from the Wounded Knee area of western South Dakota. Bulletin of the American Museum of Natural History 125(3):139-238
- Phylogentic Systematic of the Borophanginae, X. Wang, 1999 Archived March 20, 2007, at the Wayback Machine.
- S. Legendre and C. Roth. 1988. Correlation of carnassial tooth size and body weight in recent carnivores (Mammalia). Historical Biology
- 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.
- - PaleoDataBase - Cynarctoides roii
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