THE CARNIVORES 



175 



Fig. 60 illustrates the dentition of the Dog, Canis familiaris. 

 The superficial resemblance to the marsupial Thylacine (Fig. 

 20) will be immediately recognized but there is no real simi- 

 larity and a second glance shows that the teeth differ consider- 

 ably in the two animals although elongated jaws and the 

 carnivorous adaptation are present in both. Primitive fea- 

 tures are seen in the Dog in the low position of the condyle, in 

 the termination of the palate near the hinder upper molar and 



Fig. 60. — Dentition of Dog (Canis familiaris, 9.7424-43). Note the markedly sec- 

 torial last upper premolar and first lower molar, the loss of the last upper and the 

 diminutive size of the last lower molar. 



in several dental characters such as the tritubercular formation 

 only slightly modified in the upper molars. The dental for- 

 mula is: 



3 1 4 9 

 if, Cy,P|,M-, total 42. 



and thus lacks only one upper molar of the complete placental 

 dentition. 



The incisors graduallv increase from the first to the third 



