The Orders of Pennsylvania Mammals 



There are about fifteen orders of Mammals in the 

 whole world. In the United States only nine of these 

 orders are represented. The Pennsylvania Mammals 

 are grouped into six orders as follows: 



1 . Marsuplalia — Opossums. 



2. Chiroptera — Bats. 



3. TsECTiVORA — Moles and Shrews. 



4. Carnivora — Dogs, Wolves, Foxes, Bears, 

 Minks, Weasels, Raccoons, Skunks, Otters, 

 and Cats. 



5. Rodentla — Rats, Mice, Squirrels, Wood- 

 chucks, Beavers, Porcupines, Chipmunks, 

 Rabbits, and Hares. 



6. Ungulata — Deer, Cows, Horses, and Pigs. 

 The following Key will assist in distinguishing the 



various orders: 



a Marsupial pouch present I. Marsupialia 



aa No marsupial pouch 

 '1 Hind limbs present 



M Flying Mammals 2. ClllROPTERA 



'2 Non-flying Mammals 

 'M Feet with Claws and not with hoofs 

 M Canine teeth present 

 M Limbs used for running and walking — not 

 swimming 

 ^1 Canines small 3. INSECTIVORA 



"1 Canines large and prominent 



4. Carnivora 

 '1 Canine teeth absent 5. Rodentia 



•'2 Hoofed Mammals 6. Ungltlata 



-•«>{ 55 y^~ 



