UROCYON CALIFORNICUS Mearns 



Text figure 43 



A finely preserved skull (fig. 43), no. 12263, represents a form almost- 

 identical with the existing Urocyon calif ornicus of southern California. As 



is indicated in the tahle of measurements 

 below, the dimensions are very close to those 

 of two Recent specimens from the San 

 Jacinto region not far distant. It is inter- 

 esting to note that this form has survived 

 to the present day with less modification 

 than the other canid types. 



Portions of the lower jaw and dentition 



Fig. 43. Vrocj, Su- n f m ., n pvirlpntlv rpr>rp<?PTltiTl<r this wipHps 



perior view of skull, no. 12263, X %. Eanclio OI d I()1 m e\ lUCUUN lepiChLULlilg Llllb hpLCieb 



La Brea Beds. are a i so known from Rancho La Brea. 



Measurements of Skull and Dentition 



Length of skull, anterior end of premaxillaries to 



posterior side occipital condyles 



Width across zygomatic arches 



Least width between superior borders of orbits 



Width of palate between inner borders of second 



upper molars 



Length of superior dental series from anterior side 



of canine alveolus to posterior side of M 2 



Length from anterior side of P 4 to posterior side 



of M- 



P\ anteroposterior diameter along outer border .... 

 M 1 , anteroposterior diameter along outer border .... 



M 1 , greatest transverse diameter 



M'-, anteroposterior diameter along outer border .... 

 M-. greatest transverse diameter 



a Univ. Calif. Mus. Vert. Zool. 



No. 12263 



No. 2324a 



No. 2316a 



Kancbo La Brea 



Keeent 



Recent 



119.3 mm. 



118.7 



122.8 



68.2 



64.4 



67.6 



23.8 



22.5 



26 



17 



15.8 



18.4 



52.2 



52.5 



53.2 



22.3 



22.5 



22.3 



9.9 



10 





7.5 



8.4 



7.7 



10.6 



11.4 



10.5 



5.4 



6 



5.6 



7.9 



8.2 



7.4 



Date of issue, Octobt r 25, 1912. 



[262] 



