1) Class 2) Marsupial of Central America 3) Subclass metatheria 
Metatheria is a group of animals that includes all mammals more closely related to marsupials than to placentals. First proposed by Thomas Henry Huxley in 1880, it is a slightly more inclusive group than the marsupials; it contains all of the living mammals with abdominal pouches (most female marsupials) as well as their more primitive ancestors a...
Metatheria is a subclass of mammal. These are the marsupials. The young are born in an immature state and migrate into a pouch on the mother's abdomen where they are nourished on milk.
[n] - pouched animals
subclass Metatheria noun pouched animals