allosaurus amphicoelias ancient greek andrew carnegie animal apatosaurus barosaurus benjamin franklin mudge berlin berlin hauptbahnhof biological classification bone brachiosaurus camarasaurus carnegie museum of natural history ceratosaurus chicago chordate clade colorado columbia university como bluff cretaceous dinheirosaurus dinosaur diplocaulus diplodocid facial nerve field museum of natural history fossil genus geological society of america george olshevsky germany haplocanthosaurus histology horseshoe houston museum of natural science iguana john bell hatcher journal of natural history jurassic keratin kimmeridgian late jurassic london macronaria madrid mamenchisaurus montana morrison formation national museum of natural history natural history museum new mexico museum of natural history and science nomen dubium othniel charles marsh ovipositor paleontology portugal quadruped reptile saltasaurus samuel wendell williston saurischia sauropoda sauropodomorpha scale model senckenberg museum sexual maturity shunosaurus skeleton skull spain species stratum supersaurus suuwassea the american heritage dictionary of the english language the rite of spring titanosaur tithonian ton tonne tornieria toy type genus type species utah vertebra walking with dinosaurs wikimedia commons wikispecies wyoming