Order Marsupialia
Young are born premature and migrate to a pouch (marsupium) on mothers belly. There they attach to a nipple and complete development.
Family Dedelphidae
a) 5 toes on all feet, inside toe of hind feet opposable.
b) prehensile tail, scaly
Example:
Didelphis virginiana - Virginia opposum
Skin: pointed nose, white face, ears black, tail naked
Skull: I 5/4 C 1/1 PM 3/3 M 4/4 Total = 50
large sagittal crest
