Comparing Saurischian and Ornithischian Pelvises Artwork of a Tyrannosaurus rex dinosaur Brachiosaurus Herd On The Move Homo floresiensis A pair of juvenile troodons in the hollow of a tree Pachycephalosaurus Megatherium, Extinct Ground Sloth A herd of Brachiosaurus travel near a canyon mountain Allosaurus Triceratops A Herd Of Centrosaurus Dinosaurs Ceratosaurus Body Plans of Extinct Reptiles Stegosaurus Hunting sabre-toothed cat Artist's concept depicting the evolution of a lobe-finned fish to an amphibian Cretaceous life, artwork Euoplocephalus Apatosaurus Brachiosaurus A Woolly Mammoth bursting out of a snowy, wooded backdrop Allosaurus 1824 Buckland's Megalosaurus jaw teeth Mankind in the Making Artwork of a sabre-toothed cat (Smilodon sp.) Mesohippus, Extinct Horse Neolithic hunters Coelophysis Newgrange, County Meath, Leinster, Republic of Ireland, Europe Cambrian invertebrate, artwork Paranthropus robustus Cryolophosaurus Dinosaurs Hunting For Prey In A Prehistoric Environment Compsognathus Woolly mammoth, 19th century artwork Australopithecus sediba head Cretaceous tree ferns, artwork Homo ergaster Ostracoderm (Ostracoderma), Fishlike Animal, Fossil Skeleton Of The Megatherium Anglaspis is a heterostracan from the Early Devonian Eurhinosaurus longirostris swimming in prehistoric waters Brontotherium, a family of extinct mammals Homo antecessor Newgrange, County Meath, Leinster, Republic of Ireland (Eire), Europe Early Earth, artwork Illustration of a Nikkasaurus tatarinovi Illustration of a Moschowhaitsia vjuschkovi Page 1 Page 2