Palaearctonyx ("ancient bear's claw") is an extinct genus of omnivorous placental mammals from clade Carnivoraformes, that lived in North America from the early to middle Eocene.J. J. Hooker (1986.) "Mammals from the Bartonian (middle/late Eocene) of the Hampshire Basin, southern England." Bulletin of the British Museum (Natural History) 39(4):191-478J. J. Flynn (1998.) "Early Cenozoic Carnivora ("Miacoidea")." In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.) "Evolution of Tertiary Mammals of North America. Volume 1: Terrestrial Carnivores, Ungulates, and Ungulatelike Mammals." Cambridge University Press, Cambridge.

Classification and phylogeny Classification Palaearctonyx was named by Matthew in 1909 and it was assigned to family Miacidae. Later, it was assigned to Caniformia by Flynn and Galiano in 1982, and then back to Miacidae by Flynn in 1998. From 2010 and later, this genus was assigned to clade Carnivoraformes.

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