Related by context. Frequent words. (Click for all words.) 73 Late Cretaceous 69 Cretaceous 67 Pleistocene 62 dinosaurs 61 Triassic 61 Pliocene 61 Eocene 60 Mesozoic 59 glaciation 57 Jurassic 57 Ordovician 56 fossil 56 prehistoric 56 megafauna 55 Precambrian 55 sauropod 55 fossils 55 Homo sapiens 55 mammoths 55 Australopithecus 55 hominid 54 fossilized remains 54 tyrannosaurs 54 Homo erectus 54 Ice Age 54 Paleolithic 54 mass extinction 53 Little Ice Age 53 anatomically modern 53 theropods 53 Holocene 53 Archaeopteryx 52 hominids 52 Australopithecus afarensis 52 multicellular 52 Neandertals 52 Neanderthals 52 dinosaur 52 sauropods 51 mass extinctions 51 Paleozoic 51 prehistory 51 mastodons 51 fossilized 51 fossilized bones 51 pterosaur 50 homo sapiens 50 Homo habilis 50 Tyrannosaurus rex 50 Fertile Crescent 50 T. rex 50 mammals 50 Devonian 50 woolly mammoths 49 Miocene 49 Longrich 49 Mammoths 49 mammal 48 tetrapods 48 Han Dynasty 48 palaeontologists 48 dinosaur fossil 48 Fossils 48 Medieval Warm Period 47 Proterozoic 47 vertebrates 47 herbivore 47 PETM 47 vertebrate 47 dinosaur fossils 47 epochs 47 volcanism 47 extinct 46 diatoms 46 single celled organisms 46 #BC [003] 46 primate species 46 hunter gatherers 46 sedimentary rock 46 single celled 46 woolly mammoth 46 vertebrate species 46 Neolithic 46 Gondwana 45 dinos 45 prehistoric creatures 45 lineages 45 baleen whales 45 dino 45 mammal species 45 pterosaurs 45 Denisovans 45 taxa 44 eukaryotes 44 paleontologists 44 overhunting 44 dinosaur skeletons 44 hunter gatherer 44 breeding colony 44 Vertebrate Paleontology 44 Neanderthal