MAESUPIALIA 



37 



5.1.3.4. 



Family 8. Oaroloameghiniidae Amegliino. 



C small, P sim,ple and elongated. Up'per M trituhercular with 



intermediate tubercles. Lower M with low trigonid and large talonid and secondary 

 tubercles before and behind the high metaconid. Lower jaw slender and low. 



The M resemble in form partly those of Primates, partly those of Eodenfia. 

 Caroloameghinia Ameghino (Fig. 59). Eocene. Notostylops beds of 

 Patagonia. 



A B 



Fig. 59. 



Caroloameghinia mater Ameghino. Upper Eocene ; Notostylops beds, Patagonia, a, inferior aspect of upper 

 molar ; 6, superior aspect of Mj and Mo, '^Ji ; c, lower jaw, i/i. (After Ameghino.) 



GEOLOGICAL AND GEOGRAPHICAL DISTRIBUTION 

 OF MARSUPIALS. 









Trias. 



I 







d 



OS 



a. 



D 

 O 



a 



D 

 <! 



OS 



w 



0. 



P. 



Tertiary. 



W 



o 



i 



s 



►J 



Recent. 





g 



ci3 

 O 



B 

 o 



< 



o 



a. 

 o 



o 



1 



1 



o 



1 



|2; 



o 



s 



1 



1 

 o 



o1 



1 



1 

 s 



1 



1 

 < 



I. AUotheria. 



1. Tritylodontidae 



2. Plagiaulacidae 



3. Polymastodontidae 



4. Polydolopidae 



—' 

















— 















— 



— 



— 









II. Diprotodontia. 



1. Caenolestidae 



2. Phalangeridae 



3. Phascolomyidae 



III. Polyprotodontia. 



1. Dromatheriidae 



2. Triconodontidae 



3. Myrmeeobiidae 



4. Peramelidae . 



5. ISTotoryctidae . 



6. Pantotheriidae 



7. Dasyuridae . 



8. Didelphyidae 













— 





















— 















— 

















— 





— 



— 







— 



9. Caroloameghiniidae 











































