theropod, horned dinosaur, ichthyosaur, allosaurus, tyrannosaurus, hadrosaur, coelophysis, theropod dinosaur, sauropod, hominid, pterosaur, monotreme, australopithecines, baleen whale, iguanodon, archeopteryx, protoceratops, apatosaurus, sauropod dinosaur, columbian mammoth, peccary, ornithopod, plesiosaur, archaeopteryx, homo erectus, genus australopithecus, paranthropus, smilodon, psittacosaurus, triceratops, mosasaur, australopithecus, australopithecus africanus, crocodilian, camarasaurus, tyrannosaurus rex, trilobite, dinosaur, erectus, brachiosaurus, ankylosaur, robustus, sea scorpion, utahraptor, placoderms, woolly rhinoceros, dinos, devonian period, crinoids, coprolites, velociraptor, fossils, mammal, compsognathus, herbivore, genus homo, anthropoid, elephant shrew, braincase, eukaryote, stegodon, canid, habilis, placentals, chordates, coprolite, cretaceous period, edmontosaurus, jurassic period, diplodocus, arthropod, placental mammal, megafauna, permian period, forelimbs, sifaka, gracile, tuataras, dinosauria, vertebrates, homo heidelbergensis, moa, brachiopods, mammuthus, flatfishes, neandertal, tetrapods, titanosaur, architeuthis, flatworm, hominoids, archosaur, scutes, insectivore, stegosaurs, deinonychus, ostracods, mantis shrimp, pileated, ambystoma, conodonts, meadow vole, baboon, bass, chimpanzee, gorilla, grouse, halibut, iguana, mammoth, ptarmigan, roach, squid, alligator, alligators, amphibians, animal, ape, bears, bison, buffalo, bug

bird-footed dinosaur, theropod, theropod dinosaur

tyrannosaurus, tyrannosaurus rex