Question

Write four features of infra class eutheria.

Answer 1

Answer:

All extant marsupials are endemic to Australasia and the Americas. A distinctive characteristic common to these species is that most of the young are carried in a pouch. Well-known marsupials include kangaroos, wallabies, koalas, phalangeriformes, opossums, wombats, and Tasmanian devils.

Answer 2

Answer:

an enlarged malleolus ("little hammer") at the bottom of the tibia, the larger of the two shin bones.

the joint between the first metatarsal bone and the entocuneiform bone (the outermost of the three cuneiform bones) in the foot is offset farther back than the joint between the second metatarsal and middle cuneiform bones—in metatherians these joints are level with each other.

various features of jaws and teeth