Related by context. Frequent words. (Click for all words.) 67 Homo sapiens 67 Homo erectus 65 Neanderthals 62 hominids 61 hominid 61 Australopithecus 55 tetrapods 54 Archaeopteryx 53 Neolithic 52 common ancestor 52 Pleistocene 52 fossils 52 hunter gatherers 51 homo sapiens 51 Neanderthal 49 Paleolithic 48 humans 48 mammoths 47 prehistoric 47 dinosaurs 47 vertebrates 47 domestication 47 Bronze Age 47 Cretaceous 46 domesticated 46 prehistory 46 hunter gatherer 46 glaciation 46 Ice Age 46 sauropod 46 apes 45 tyrannosaurs 45 pterosaurs 45 Ardi 45 primate species 45 Oetzi 45 sauropods 45 Pliocene 45 fossil 45 interbreeding 45 Precambrian 44 Cro Magnon 44 Iron Age 44 #BC [003] 44 lineages 44 Triassic 44 woolly mammoth 44 avian influenza viruses 43 Mesozoic 43 fossilized remains 43 mass extinction 43 phylogenetic 43 H#N# viruses 43 Homo 43 Bering Strait 43 woolly mammoths 43 single celled organisms 43 radiocarbon dating 43 clade 42 evolutionarily 42 mastodons 42 radiocarbon 42 ancestor 42 millennium BC 42 humanlike 42 taxa 42 T. rex 42 mammals 41 primates 41 Mesoamerica 41 chimpanzees 41 bluestones 41 volcanism 41 Polynesians 41 Gondwana 41 eukaryotes 40 pterosaur 40 speciation 40 Ordovician 40 Little Ice Age 40 nonhuman primates 40 evolutionary 40 Eocene 40 vertebrate 40 #BC [002] 40 ancestors 40 mammal 40 dinos 40 mastodon 40 palaeontologists 40 Holocene 40 herbivore 40 mammalian 40 archaea 40 fossilized 40 ancient Egyptians 40 Miocene 39 pre Columbian 39 millennia 39 Middle Ages 39 genetically distinct