Related by context. Frequent words. (Click for all words.) 67 feathered dinosaurs 67 theropod 64 pterosaur 64 Gigantoraptor 64 Raptorex 63 hadrosaur 63 Tiktaalik 62 tyrannosaur 62 carnivorous dinosaur 61 theropod dinosaurs 61 tetrapod 61 Archaeopteryx 61 placental mammals 61 Ardipithecus ramidus 60 Indohyus 60 melanosomes 59 H. erectus 59 tetrapods 59 horned dinosaur 58 Early Cretaceous 58 Diplodocus 57 baleen whale 57 Ardipithecus 57 fossilized remains 57 theropods 57 Neandertal 57 fossil specimens 57 sexual dimorphism 56 mottled brown 56 morphologically 56 sauropod 56 carnivorous dinosaurs 56 coprolites 55 unicellular 55 subfamily 55 snail shells 55 morphologies 55 dinosaur fossil 55 otolith 55 Apatosaurus 55 otoliths 55 maxillary 55 Nigersaurus 55 phylogenetic tree 54 tyrannosaurus 54 convergent evolution 54 LB1 54 nacre 54 mitochondrial genome 54 ammonites 54 multicellular 54 marine invertebrates 54 marine reptile 54 fossils 54 forelimb 54 H. sapiens 54 Paleoanthropology 54 triceratops 54 Caenorhabditis elegans 54 vertebrate 54 mammalian species 54 morphology 53 iridescence 53 globular 53 T. rex 53 fossa 53 amino acid sequences 53 pectoral fins 53 macroevolution 53 billed dinosaur 53 evolutionary origins 53 hominid 53 trilobites 53 anthropoids 53 prokaryotes 53 morphological 53 crocodilian 53 fossilized bones 53 anthropoid 53 Fossilized 53 crocodilians 53 Stegosaurus 53 vertebrate animals 53 phyla 53 tyrannosaurus rex 53 wooly mammoth 53 canine teeth 53 Australopithecus 52 herbivorous 52 microfossils 52 taxon 52 dinosaur 52 palaeontologists 52 Brachiosaurus 52 primate evolution 52 Longrich 52 sauropods 52 glycan 52 phylogeny 52 fossilized 52 forelimbs