devonian period, triassic period, cretaceous period, cambrian period, jurassic period, pliocene epoch, miocene epoch, permian period, pleistocene epoch, interglacial, oligocene epoch, carboniferous period, tertiary period, cenozoic, mesozoic era, neogene, conodonts, cenozoic era, paleogene, hadean, pleistocene, noachian, pliocene, paleozoic era, eocene, ordovician, gondwanaland, supercontinent, paleocene, faunas, sauropod dinosaur, upper paleolithic, ostracods, mya, holocene epoch, neolithic age, laurasia, quaternary period, middle paleolithic, phanerozoic, brachiopods, foraminifera, ichthyosaur, carboniferous, paleolithic age, archeopteryx, stromatolite, iguanodon, hominoid, holocene, stegodon, columbian mammoth, trilobites, australopithecus africanus, australopithecines, oligocene, palaeo, radiocarbon, hadrosaur, mesozoic, eukaryote, woolly rhinoceros, prehistoric, dinosauria, fossils, mesolithic, neandertal, homo erectus, homo heidelbergensis, horned dinosaur, placentals, tetrapod, australopithecus, deglaciation, microfossils, placental mammal, cretaceous, mammuthus, triassic, archaean, glaciation, habilis, collared peccary, coprolites, fossilised, angiosperm, toothed whale, upper carboniferous, psittacosaurus, crinoids, diatoms, paranthropus, bryozoans, genus australopithecus, refugium, precambrian, metazoans, sebastian vizcaino, geochronology, biogeographic, plesiosaurs, paleobotany

tertiary, tertiary period

epoch

eocene