Documents Primitive Mammals: in an Egg or Pouch

In some way reptiles can be considered as the ancestors of mammals. These reptiles, however, had little in common with modern reptiles. Fossil evidence indicates that a split…

Documents Reptiles and Birds

Reptiles and Birds Reptiles and Birds + Reptiles + Reptiles Body Plan Contrary to common belief, reptile scales can be smooth or rough, and they are never slimy. The basic…