Related by context. Frequent words. (Click for all words.) 59 feathered dinosaurs 58 Indohyus 58 theropod 57 tyrannosaur 55 Archaeopteryx 55 Nigersaurus 55 pterosaur 55 theropods 54 trilobites 53 carnivorous dinosaurs 53 mouthparts 53 sauropods 53 dinos 52 mandibles 52 Tiktaalik 52 forelimbs 52 morphologically 52 pterodactyls 52 baleen whales 51 subfamily 51 T. rex 51 hadrosaur 51 anthropoids 51 pterosaurs 51 tetrapod 51 H. erectus 51 herbivorous 51 pectoral fins 50 tyrannosaurs 50 fossils 50 Velociraptor 50 plesiosaur 50 crocodilians 50 sea anemones 50 marine reptiles 50 canine teeth 50 flagellum 49 mammals 49 LB1 49 Triceratops 49 vertebrates 49 cephalopods 49 squids 49 mammal 49 coprolites 49 otoliths 49 mandible 49 tetrapods 49 T rex 49 foraminifera 49 Neandertals 48 Tyrannosaurus 48 fossilized bones 48 triceratops 48 palaeontologists 48 marine invertebrates 48 billed dinosaur 47 Longrich 47 Caenorhabditis elegans 47 fossil 47 coelacanth 47 velociraptor 47 mammalian species 47 single celled organisms 47 vertebrate 47 hominin 47 Homo habilis 47 mitochondrial genome 47 skull fragments 47 Archaea 47 cetaceans 46 Stegosaurus 46 fossilized remains 46 Homo floresiensis 46 Denisovans 46 microfossils 46 Tyrannosaurus rex 46 amoebae 46 fossilized 46 prokaryotes 46 diatoms 46 sticklebacks 46 sauropod 45 dinosaurs 45 Neandertal 45 saber toothed cat 45 stromatolites 45 mammalian 45 hominid 45 eukaryotic cells 45 dinosaur 45 damselflies 45 pileated woodpecker 45 jawbones 45 melanosomes 45 bony fish 45 fossa 45 avian species 45 Australopithecus 45 Late Cretaceous 44 herbivore