triassic period Definition

triassic, cretaceous period, permian period, pleistocene epoch, jurassic period, devonian period, cambrian period, miocene epoch, eocene epoch, mesozoic era, gondwanaland, paleozoic era, laurasia, oligocene epoch, tertiary period, pliocene epoch, cenozoic era, carboniferous period, supercontinent, neolithic age, faunas, stegodon, upper paleolithic, sauropod dinosaur, mya, australopithecines, dinosaurs, paleogene, pleistocene, cenozoic, homo heidelbergensis, mesozoic, megafauna, psittacosaurus, genus australopithecus, interglacial, trilobites, iguanodon, conodonts, homo erectus, placentals, ichthyosaurs, mesolithic, archeopteryx, holocene epoch, pliocene, prehistoric, mammuthus, crinoids, plesiosaurs, mammoths, ostracods, middle paleolithic, horned dinosaur, prehistory, brachiopods, tyrannosaurs, neogene, robustus, anthropoids, wrangel island, ordovician, columbian mammoth, paleocene, cretaceous, paleolithic age, precambrian, theropod dinosaur, eocene, noachian, protoceratops, paranthropus, archosaur, baleen whale, hadean, placental mammal, australopithecus, aurochs, woolly rhinoceros, dinosauria, australopithecus africanus, phanerozoic, aurignacian, ankylosaurus, fossilised, fossils, camarasaurus, glaciation, spiny anteater, hominoid, habilis, carboniferous, australopithecus afarensis, flatfishes, semidesert, stromatolite, olduvai gorge, braincase, theropods, isopods,