The Hesperornis

Archaeotherium mortoni occupied an opportunistic

such as Velociraptor

enjoying their underwater feast

Approximate measurements of the Archeopteryx:

Shantungosaurus giganteus Variant:Primed The HesperornisShantungosaurus giganteus is an ornithopod dinosaur of the family Hadrosauridae , which lived during the Late Cretaceous , approximately 70 million years ago , in what is now China . Discovered in Shandong Province and described in 1973, this dinosaur is known for being the largest hadrosaurid ever recorded , with an estimated length of 15 to 16. 6 meters and a weight that may have reached 16 tons , placing it among the largest non sauropod