Mammals are a group of animals with hair, simple jaws, complex teeth, and nurse their young. Today there are three lineages of mammals - the monotremes, the marsupials, and the placental mammals. However there were multiple extinct lineages of mammals besides those three.
This category has the following 2 subcategories, out of 2 total.
Pages in category "Mammals"
The following 15 pages are in this category, out of 15 total.