CLASSIFICATION OF THE MAMMALIA ADOPTED IN 



THIS BOOK 



(See especially pages 91-192). 



CLASS MAMMALIA LINNJEUS 



Sub-class 1. PROTOTHERIA Gill (egg laying mammals) 

 Infra-class. ORXITHODELPHIA De Blainville 



? Order : *Protodonta Osborn (Of uncertain systematic position) 



(p. 18.) 



Dromatkerium ) ., 



,,. 7 >(Tnassic) 



Microconot/oii } 



Order: Monotremata Geoffrey Saint Hilaire (p. 105.) 



Ornithorhynch t/.s 

 Echidna 



? Order : * Allotheria Marsh (Multituberculata Cope), of un- 

 certain systematic position (p. 101.) 

 Examples 

 Playiaulax 

 Poli/mastodon 

 Tritylodon 

 Microlcstes 



Sub-class 2. EUTHERIA Gill (Viviparous mammals) 



Infra-class 1. DIDELPHIA De Blainville (Metatheria Huxley) 



? Order : *Triconodonta Osborn (Of uncertain systematic posi- 

 tion, usually regarded as carnivorous 

 Marsupials) (p. 21.) 

 Examples 

 Amphilestes 

 Triconodon 



Order: Marsupialia Illiger (Pouched mammals) (p. 108.) 



Sub-order : Polyprotodontia Owen 

 Examples 



Opossums (Didelphys) 

 Dasyures 

 Thylacynes, etc. 



The asterisk (*) denotes an entirely extinct order. 



