Infraclass

Placentalia (Placental mammals)

Myotis californicus. Photo: (c) Frank Carey, some rights reserved (CC BY-NC-SA)

Placentalia is one of the three extant subdivisions of the class of animals Mammalia; the other two are Monotremata and Marsupialia. The placentals are partly distinguished from other mammals in that the fetus is carried in the uterus of its mother to a relatively late stage of development. The name is something of a misnomer considering that marsupials also nourish their fetuses via a placenta, though for a relatively briefer period, giving birth to less developed…

— Wikipedia

Subtaxa

Where in Humboldt



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