fossil, fossilised, sauropod dinosaur, coprolite, trilobite, prehistoric, hominoid, mastodon, pterosaur, crinoid, stromatolite, mummified, hominid, theropod dinosaur, duckbilled, horned dinosaur, radiocarbon dating, jurassic period, paleozoic era, columbian mammoth, carboniferous period, tetrapod, brachiopod, cambrian period, dinosaurian, cretaceous period, placoderm, baleen whale, placental mammal, ammonite, tyrannosaurus rex, middle paleolithic, prehistorical, insectivore, homo heidelbergensis, echinoderm, devonian period, mammuthus, extinct, toothed whale, tyrannosaurus, datable, anthropoid, woolly mammoth, eukaryote, crocodilian, aurignacian, ceratopsian, vertebrate, australopithecus africanus, palaeontological, raptorial, australopithecus afarensis, homo habilis, relict, neandertal, jawless, carboniferous, permian period, peccary, woolly rhinoceros, herbivorous, excavated, cenozoic era, stegodon, dawn redwood, paleontological, lithic, arthropod, australopithecine, mousterian, unicellular, duckbill, calcareous, molluscan, australopithecus, decayed, skeletonized, shang dynasty, metazoan, mammal, palaeo, triassic period, sedimentary rock, elephant shrew, herbivore, jawless fish, neolithic age, mesozoic, upper paleolithic, gracile, quadrupedal, sabertooth, neogene, homo erectus, apelike, stalactite, genus australopithecus, bilaterally symmetrical, hoofed mammal, hawk moth, wormlike, petrified, ossified, desiccated, decomposed, wellpreserved, charred, diseased, disintegrated, silicified, unidentifiable, antediluvian, disarticulated, intact

edmontosaurus, fossilize, fucoid

inflexible, ossified