Theria

ASSOCIATED FACTORS

  • Marsupials and placental mammals fall in this category.
  • Major 4 characteristics of this sub-class are:
    • Presence of external pinna
    • Absence of cloaca
    • Presence of nipples in the mammary glands
    • Females are viviparous in nature.
Last modified: Saturday, 25 September 2010, 5:02 AM