Dinosaurs and Prehistoric Animals:North America 120 Million Years Ago

The American raptors of the early Cretaceous are bigger than their cousins in the forests of contemporary China.

Acrocanthosaurus - a huge carnivore with a short spinal ridge

Utahraptor and Deinonychus - tiger and wolf-sized "raptors"

Gastonia and Sauropelta - armored dinosaurs (Gastonia has a tail club, Sauropelta has a spiked neck)

Astrodon - a sauropod

Tenontosaurus - an iguanodon relative with a very long tail