SUBORDER B 



FISSIPEDIA 



69 



Family 3 

 3.1.4-3.2 



Procyonidae {Subursi Blainville). Raccoons. 



No typical carnassials. Upper molars and last premolar rounded, 



quadrate, trituberadar or quadritubercular. Lower M with blunted trigonid, and 

 bitubercular talonid. Cranium short and broad. Extremities pentadactyl, planti- 

 grade. 



The Procyonidae are, with the exception of the isolated Himalayan genus 

 Ailurus, recent forms of the American region. They may have been derived 

 from the Miacidae or, according to Teilhard, from the Cynodontinae (Pachycynodon). 



Procyon Storr. Eaccoon. Kecent and in the Pleistocene of North and 

 South America. 



Bassariscus Coues. Recent and in the Pleistocene and Pliocene of North 

 America. B. antiquus Matthew. 



Nasua Storr. Recent and fossil in Pleistocene of South America. 



Cyonasua and Pachynasua Ameghino are found in the Parana beds ; Aniphi- 

 nasua Moreno in the Araucanian strata of the Argentine Pliocene. 



i P 2 M 



Phlaocyon Matthew. (Fig. 95). ' • Cranium and skeleton resembling 



that of Procyon. Teeth resembling those of Cynodictis, but last premolar more 



complex, possessing two inner tubercles. Large 

 auditory bullae. P. leucosteus Matthew. Lower 

 Miocene of Colorado. 



Leptarctus Leidy. 



3.1.3.2 



P with talonid, 



Fig. 95. 



Phlaocyon leucosteus Matthew. Miocene 

 of Colorado. Lower aspect of the skull. 

 1/2- (After Matthew.) 



Parailurus anglicus Boyd Dawkins sp. Pliocene of Baroth, 

 Transylvania, a, Upper, and b, lower tooth-row, P^- Mn. i/i. 



mandible high and truncate in front. Related to Procyon. Loup Fork beds, 

 South Dakota. 



Parailurus Schlosser (Fig. 96). M highly complicated; P much simpler 

 than in the living genus Ailurus. Red Crag of England and Pliocene Lignite 

 of Baroth, Transylvania. 



Cynarctus Matthew. Three molars in lower jaw. M^ with cusp toward 

 outer side of protoconid, M^ also with protoconid. Coronoid process of 

 mandible triangular. C. saxatilis Matthew. Regarded by Matthew as belong- 

 ing to the Canidae. Loup Fork beds, Colorado ; Upper Miocene. 



