CLASSIFICATION. 43 



Family Ornithorhynchidae. Ornithorhynchus duck- 

 bill. 



Family Echidnidae. Echidna spiny anteater. 

 Group Multituberculata. Tritylodon. 



Subclass (II). DIDELPHIA or METATHERIA. 



Order. MARSUPIALIA. 

 Suborder (1). POLYPROTODONTIA. 

 Family Amphitheriidae. Phascolotherium. 



Family Didelphyidae. Didelphys opossum. 



Family Dasyuridae. Thylacinus Tasmanian wolf. 

 Sarcophilus Tasmanian devil. 

 Dasyurus. 

 Family Peramelidae. Perameles bandicoot. 



Choeropus. 

 Family Notoryctidae. Notoryctes marsupial mole. 



Suborder (2). DIPROTODONTIA. 



Family Phascolomyidae. Phascolomys wombat. 

 Family Phalangeridae. Tarsipes. 



Phalanger cuscus. 

 Phascolarctus koala. 

 Tkylacoleo. 



Family Diprotodontidae, Diprotodon. 

 Family Nototheriidae. Nototherium. 

 Family Macropodidae. Macropus kangaroo. 

 Family Epanorthidae. Coenolestes. 



Subclass (III). MONODELPHIA or EUTHERIA. 

 Order 1. EDENTATA. 



Family Bradypodidae. Bradypus ) 



nu 1 r sloths. 



CholoepusJ 



