Related by context. Frequent words. (Click for all words.) 59 ancestors 51 ancestor 51 Fertile Crescent 50 dinosaurs roamed 50 migrated 49 forebears 49 Neandertals 48 Denisovans 47 colonized 47 megafauna 47 prehistory 47 descendents 47 Homo erectus 47 hunter gatherers 47 interbred 46 ancestry 46 Cretaceous Period 46 Late Cretaceous 46 wintering grounds 46 ancestral 46 descendants 45 prehistoric 45 Pleistocene 45 landmass 45 ancestral roots 44 landmasses 44 homesteaded 44 Homo sapiens 44 fossils 44 forbears 44 genetically distinct 44 forefathers 44 migrations 43 domesticated 43 woolly mammoths 43 emigrated 43 tyrannosaurs 43 glaciers 43 Ice Age 43 Neanderthals 43 burial mounds 43 breeding colony 42 colonization 42 indigenous tribes 42 dinosaur fossils 42 ancient civilization 42 dinosaur fossil 42 mammoths 42 fossilized remains 42 flightless bird 42 extirpated 42 circumnavigation 42 immigrated 42 inhabitants 42 Paleolithic 42 journeyed 42 Polynesians 42 mammal species 42 anatomically modern 42 inhabited 41 volcanic islands 41 indentured laborers 41 glaciation 41 Prehistory 41 Neolithic 41 sauropod 41 common ancestor 41 Sumerians 41 Ancestors 41 northernmost tip 41 Bering Strait 41 overhunting 41 censuses 41 extinct 41 aborigines 41 continental drift 41 conquerors 41 rafted 40 palaeontologists 40 ancestral homeland 40 hunter gatherer 40 lineages 40 HMS Beagle 40 mastodons 40 landforms 40 temperate zones 40 Homo floresiensis 40 Bronze Age 40 lived 40 Portuguese colony 40 ranched 40 Neanderthal 40 Mesoamerica 40 Fossils 40 hominids 40 tyrannosaur 40 indigenous peoples 40 geographically isolated 40 backpacked 40 fertile plains 40 archipelagos