1. Notes on the Canidae of the White River Oligocene.;WB Scott;Transactions of the American Philosophical Society,1898
2. The ancestry of certain members of the Canidae, the Viverridae, and Procyonidae.;JL Wortman;Bulletin of the American Museum of Natural History,1899
3. The Carnivora and Insectivora of the Bridger Basin, middle Eocene.;WD Matthew;Memoirs of the American Museum of Natural History,1909
4. Les carnassiers des Phosphorites du Quercy.;P Teilhard de Chardin;Annales de Paléontologie,1914
5. Phylogeny of early Tertiary Carnivora, with a description of a new species of Protictis from the middle Eocene of northwestern Wyoming.;JJ Flynn;American Museum Novitates,1982