placental mammals

2 articles

Whippomorph Ecology: Comparing Cetaceans and Hippopotamuses

Whippomorph Ecology: Comparing Cetaceans and Hippopotamuses The group known as whippomorphs encompasses two distinct yet biologically related lineages: the cetaceans (whales and dolphins)...

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Mammals: Evolution, Anatomy, and Diversity of the Class Mammalia

Mammals: Evolution, Anatomy, and Diversity of the Class Mammalia Mammals are a diverse class of amniotes—vertebrates that lay eggs or give birth to young protected by an amnion—characteri...

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