UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



^0. 1, pp. 1-64, Pis. 1-6 ANDREW C. LAWSC 



CARNIVORA 



FROM THE 



TERTIARY FORMATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



CARNIVORA 



FROM THE 



CRTIARY FORMATIO: 



OF THE 



JOHN DAY REGION. 



BY 



John C. Mereiam. 



CONTENTS. 



PAGE 



Introduction 2 



Occurrence 3 



Canidae 5 



Canis sp 5 



Tephrocyon rurestris Condon 6 



Cynodictis (?) oregonensis, n. sp 11 



Nothocyon geismarianus, n. var. mollis 13 



Nothocyon lemur Cope 14 



Nothocyon latidens Cope 15 



Mesocyon coryphaeus Cope 16 



Mesocyon brachyops, n. sp 17 



Mesocyon josephi Cope ( ?) 19 



Indeterminate 20 



Temnocyon altigenis Cope 21 



Philotrox condoni, n. gen. and sp 30 



Felidae 37 



Nimravus and Arehaelurus 38 



Generic and specific distinctions 38 



Limbs 40 



Vertebrae 51 



Pogonodon davisi, n. sp. 53 



Age and stage of evolution of the John Day carnivore fauna 58 



(!anidae 58 



Pelidae (51 



Conclusions 64 



