Related by context. Frequent words. (Click for all words.) 66 theropod 59 horned dinosaur 58 tyrannosaur 58 feathered dinosaurs 58 H. erectus 58 Indohyus 57 carnivorous dinosaurs 57 sauropod 57 Columbian mammoth 57 Diplodocus 57 Nigersaurus 56 hominins 56 stickleback 56 megafauna 56 Tiktaalik 55 Neandertal 55 trilobites 55 marine reptile 55 mammal 55 marine reptiles 55 platypuses 55 pterosaur 54 Australopithecus 54 tyrannosaurs 54 placental mammals 54 Siberian permafrost 54 theropods 54 crocodilians 54 Archaeopteryx 54 wooly mammoth 54 Late Cretaceous 54 palaeontologists 54 hominin 54 hadrosaur 54 fossilized bones 53 plesiosaur 53 tetrapod 53 termite mounds 53 primate evolution 53 dinosaur fossil 53 arthropod 53 coelacanth 53 vertebrate animals 53 Jurassic Period 53 toothed whales 53 Neandertals 53 hominid 53 sauropods 52 baleen whales 52 ammonites 52 mitochondrial genome 52 giant tortoise 52 landmasses 52 Ardipithecus 52 Arctic permafrost 52 microfossils 52 fossils 52 mammoths 52 relict 52 anthropoid 52 forelimbs 52 Ardipithecus ramidus 52 Palaeontologists 51 mammals 51 temperate forests 51 afarensis 51 beaked whale 51 grebe 51 breeding colonies 51 tetrapods 51 Carboniferous 51 skink 51 clades 51 thylacine 51 cassowary 51 forelimb 51 species 50 woolly mammoth 50 Oetzi 50 Namib Desert 50 mudflat 50 woolly mammoths 50 billed dinosaur 50 Argentine ants 50 Longrich 50 genus Homo 50 supercontinent 50 phyla 50 vertebrate 50 dinosaur footprints 50 morphologically 50 herbivorous 50 stromatolites 50 pectoral fins 50 Homo sapiens 50 deciduous forests 50 palaeontology 50 protozoan 50 marine invertebrates 50 coprolites 50 reticulated python