Related by context. Frequent words. (Click for all words.) 68 Ardipithecus ramidus 65 Australopithecus 65 hominid 63 Australopithecus afarensis 63 theropod 63 Homo habilis 63 Ardipithecus 62 Tiktaalik 60 anthropoids 60 Indohyus 60 hominin 60 placental mammals 60 H. erectus 59 hominids 59 hominins 58 genus Homo 58 afarensis 58 Homo floresiensis 58 Neandertal 57 feathered dinosaurs 57 Neandertals 57 Diplodocus 57 horned dinosaur 57 theropods 57 Homo erectus 57 fossilized remains 57 tyrannosaur 57 Homo sapiens 57 Columbian mammoth 56 anthropoid 56 triceratops 55 Homo Sapiens 55 carnivorous dinosaur 55 LB1 55 hadrosaur 54 sauropod 54 fossils 54 sauropods 54 taxon 54 subfamily 54 Otzi 53 herbivorous 53 dinosaur fossil 53 western lowland gorillas 53 Archaeopteryx 53 unicellular 53 tetrapod 53 carnivorous dinosaurs 53 pterosaur 53 fossa 53 giant tortoise 53 trilobites 53 coelacanth 53 plesiosaur 52 marine reptile 52 palaeontologists 52 toothed whales 52 stromatolites 52 endangered primates 52 Great Rift Valley 52 tetrapods 52 palaeontologist 52 Fossilized 52 Gona 52 crocodilians 52 Velociraptor 52 crocodilian 51 okapi 51 primate species 51 wooly mammoth 51 cassowary 51 Nigersaurus 51 primatologists 51 Allosaurus 51 Bornean 51 Ardi 51 tyrannosaurs 51 saber toothed cat 51 fossil 51 Dmanisi 51 zoologists 51 Jurassic Period 51 vertebrate species 51 ammonites 50 Oetzi 50 fossilized bones 50 Palaeontologists 50 common ancestor 50 monkeys apes 50 stickleback 50 relict 50 microfossils 50 platypuses 50 anatomically modern 50 vertebrate animals 50 Late Cretaceous 50 T. rex 50 vertebrates 50 bonobo 50 marine reptiles 49 Lemurs