User blog comment:Unitatedragon/Fossils and Archaeology Mod Ideas/@comment-92.9.225.32-20130608074809

Mosasaurs and Plesiosaurs were live birthers. There are fossils from both groups showing pregnant females.

also you could add to the dinopedia what period the animal comes from.

also got tons of ideas for mobs but ill just post a few for each period

Cenozoic:

Pleistocene(ice age):

Cave Lion

Aurochs

Mastodon

Elasmotherium

Eocene:

Gastornis

Propelotherium

Ambulocetus

Mesozoic:

Cretaceous:

Carcharodontosaurus

Argentinosaurus

Edmontosaurus

Corythosaurus

Jurassic:

Allosaurus

Diplodocus

Ceratosaurus

Torvosaurus