jurassic period Definition

jurassic, cretaceous period, triassic period, devonian period, pleistocene epoch, permian period, miocene epoch, mesozoic era, cambrian period, paleozoic era, eocene epoch, pliocene epoch, homo heidelbergensis, supercontinent, tertiary period, oligocene epoch, gondwanaland, pleistocene, carboniferous period, dinosaurs, laurasia, iguanodon, cenozoic era, trilobites, sauropod dinosaur, mya, upper paleolithic, mesozoic, middle paleolithic, pliocene, neogene, mesolithic, faunas, ichthyosaurs, neolithic age, megafauna, stegodon, paleocene, paleolithic age, placentals, prehistoric, cenozoic, triassic, noachian, mammoths, horned dinosaur, habilis, archeopteryx, ordovician, homo erectus, tyrannosaur, robustus, homo habilis, eocene, columbian mammoth, ostracods, crinoid, precambrian, interglacial, brachiopods, psittacosaurus, glaciation, australopithecines, genus australopithecus, hadrosaur, plesiosaurs, hominids, hadean, carboniferous, baleen whale, mammuthus, stromatolite, ankylosaur, paranthropus, sauropods, conodonts, australopithecus africanus, eukaryote, fossilised, australopithecus, theropod, dinosauria, angiosperm, wollemi pine, fossils, archaean, prehistory, placental mammal, lower paleolithic, bronze age, mastodons, paleogene, auks, archosaur, theropod dinosaur, fossilized, neandertal, protoceratops, hominoid, aurignacian,