58 



University of California Publications. 



[Geology 



MEASUREMENTS. 



mm. 



Length of skull, anterior side of upper canine to posterior side of oc- 



cipital condyles 197 



Length from postorbital process to inion 117 



Width across zygomatic arches 157 



Width across postorbital processes 84.5 



Least diameter above orbits 55.5 



Height of inion above foramen magnum 55 



Width of occiput at middle 36.5 



Height of sagittal crest above parietal foramen 39 



Width of palate between upper canines 30 



Width of palate between deuterocones of sectorials 50 



Length, posterior side C to posterior side M l 58.5 



Length, anterior side P 3 to posterior side M 1 39 



Superior canine, antero-posterior diameter of alveolus 23 



Superior canine, transverse diameter of alveolus 12 



I-, transverse diameter of alveolus a5 



I 3 , transverse diameter of alveolus a8.2 



P 2 , antero-posterior diameter of alveolus 4 



P 3 , antero-posterior diameter 14.5 



P 4 , antero-posterior diameter 23 



P 4 , transverse diameter across deuterocone 11.75 



M 1 , antero-posterior diameter 6 



M. 1 , transverse diameter 6.5 



AGE AND STAGE OP EVOLUTION OP THE JOHN DAY CAKNIVORE 



FAUNA. 



Canidae. — Compared with the canids of other Tertiary faunas 

 in America, the John Day dogs represent a stage of evolution * 

 which does not correspond closely to that of any other forma- 

 tion. The time relations of the genera are shown in the follow- 

 ing table : — 



White John Maseall Loup 



River Day and Deep River Fork 



Dapliaenus x 



Paradaphaenus x 



Cynodictis x x(?) 



Nothocyon x 



Protemocyon x 



Mesocyon x 



Cynodcsmus x 



Temnocyon x 



Tephrocyon x 



Aelurodon x 



Canis x(?) x(?) 



Enhydrocyon x 



