MAY, 1921. AMERICAN MARSUPIAL, C^NOLESTES OSGOOD. 13 



12. Notoryctidae 



13. fMicrobiotheridae 



14. Didelphyidae 



15. fAmphitheridae 



1 6. fTriconodontidae 



17. fDromatheridae 



AMEGHINO 1903. 

 Subclass MARSUPIALIA 



Superorder DIPROTODONTA 

 Order PLAGIAULACOIDEA 



Suborder \Allotkeria 



Family fPlagiaulacidae 

 fPolydolopidae 

 fNeoplagiaulacidae 

 fPromysopidae 

 fPolymastodontidae 

 Suborder Paucitttberculata 

 Family fAbderitidae 

 fEpanorthidae 

 Casnolestidae Ccenolestes 

 t Zygokstes 

 fGarzonidae 

 fMicrolestidae 

 Order HYPSIPRYMNOIDEA 



Australian diprotodonts 

 Order RODENTIA 



Rodents. Equivalent to Glires 

 Superorder POLYPROTODONTA 



Australian and American polyprotodonts 



WEBER 1904. 



SubclaSS;MARSUPIALIA 



Order MARSUPIALIA 



Suborder Polyprotodontia 



Family Didelphyidae 

 Dasyuridae 

 Notoryctidae 

 Peramelidae 



