Related by context. Frequent words. (Click for all words.) 64 Archaeopteryx 61 theropod 60 Tiktaalik 59 theropods 56 pterosaur 56 tyrannosaur 56 hadrosaur 55 carnivorous dinosaurs 55 pterosaurs 55 vertebrates 54 tetrapods 54 Ardipithecus 54 crocodilians 53 hominin 53 fossil 52 vertebrate 52 hominid 52 sauropods 52 forelimbs 51 sauropod 51 Australopithecus 51 mammalian species 50 T rex 50 mammalian 50 hind limbs 49 mammals 49 billed dinosaur 49 forelimb 49 hominins 49 Australopithecus afarensis 48 mammal 48 fossils 48 bipedalism 48 T. rex 48 subfamily 48 coelacanth 48 mitochondrial genome 48 pectoral fins 48 Tyrannosaurus rex 48 fossilized remains 47 Neandertal 47 Denisovans 47 multicellular 47 single celled organisms 47 palaeontologists 47 Cretaceous Period 46 baiji 46 tyrannosaurs 46 fruit fly Drosophila 46 marine reptiles 46 plesiosaur 46 genus Homo 46 Homo habilis 46 vertebrate species 46 dinosaur fossil 46 Longrich 46 pileated woodpecker 46 Homo erectus 46 multicellular organisms 45 locomotion 45 fossilized bones 45 Tyrannosaurus 45 palaeontologist 45 bony fish 45 dinosaur skeletons 45 flagellum 45 avian species 45 wooly mammoth 45 eukaryotic 45 Paabo 45 homology 45 asexual reproduction 45 dinosaur skeleton 44 microfossils 44 prehistoric 44 Neandertals 44 echolocation 44 evolutionary 44 morphological 44 evolutionarily 44 phylogenetic 44 arthropod 44 dinosaurs 44 nonhuman primates 44 Sumatran rhinos 44 trilobites 44 species 44 hominids 44 thylacine 44 baleen whales 44 Velociraptor 43 primate species 43 arthropods 43 diatom 43 bipedal 43 Homo sapiens 43 single celled 43 Homo floresiensis 43 Stegosaurus 43 herbivore 43 phylogeny