LIFE HABITS AND DENTITION 



75 



tention of the third premolar which since it is the largest of 

 the premolar series represents an even more primitive condi- 

 tion than that of Phascologale. On the other hand the milk 



Fig. 20. — Dentition of Tasmanian Wolf (Thylacinus cynocenhalus. 9.211--0. An 

 example of the long-jawed Carnivore. Compare the molar shear with those of Figs. 17 

 and 19. Note the excavation immediately in front of the canine on the upper jaw for 

 reception of the elongated lower canine. 



molar which is replaced by this tooth is small, functionless and 

 shed very early. 



The dental formula is: 



lfc±P§,M± total 46. 



The incisors are arranged in almost transverse rows, the 

 typical carnivorous rasping position. All the upper teeth are 

 incurved and the median incisors do not show the separation 

 of bases and the approximation of tips found in Sarcophilus. 



The canines present the usual carnivorous size and strength. 



The molars are modified for shearing action as in Sar- 



