permian period, jurassic period, cretaceous period, triassic period, mesozoic era, eocene epoch, miocene epoch, cambrian period, cenozoic era, pleistocene epoch, paleozoic era, gondwanaland, sauropod dinosaur, supercontinent, archeopteryx, oligocene epoch, tertiary period, crinoids, faunas, australopithecines, theropod dinosaur, ostracods, upper paleolithic, pliocene epoch, genus australopithecus, noachian, carboniferous period, homo heidelbergensis, ichthyosaurs, stegodon, neogene, cenozoic, pleistocene, paranthropus, trilobites, baleen whale, brachiopods, neolithic age, australopithecus africanus, habilis, pliocene, conodonts, iguanodon, homo erectus, tyrannosaur, paleolithic age, middle paleolithic, plesiosaurs, angiosperm, laurasia, robustus, placentals, hominoid, monotremes, tetrapods, toothed whale, mesolithic, hominid, columbian mammoth, paleocene, australopithecus, mesozoic, megafauna, horned dinosaur, placental mammal, genus homo, theropod, georges cuvier, prehistoric, interglacial, multicellular, mammuthus, hadrosaur, carboniferous, stromatolite, flatfishes, psittacosaurus, paleogene, archaeopteryx, dinosaurs, eukaryote, camarasaurus, mya, aurochs, hadean, eocene, aurignacian, giganteus, ordovician, placoderm, coelacanth, dinosauria, fossilised, sea scorpion, australopithecus afarensis, lower paleolithic, sifaka, gastropod, comb jelly, staghorn coral, metazoan, isopods

paleozoic, paleozoic era

geological period, period

age of fishes, devonian