Mesozoic
Cenozoic
Paleozoic
Paleontologist
Archaeologist
Geologist
Orthopedist
Cambrian
Cretaceous
Jurassic
Triassic
Stegosaurus
Brontosaurus
Triceratops
Tyrannosaurus
Spinosaurus
Carcharodontosaurus
Gigantosaurus
Tyrannosaurus Rex
Birds
Crocodiles
Frogs
Turtles