Related by context. Frequent words. (Click for all words.) 65 Neandertals 64 Paleolithic 62 Neandertal 62 Late Cretaceous 61 prehistoric 60 flint tools 60 Neolithic 60 hominins 60 Paleocene 58 Pleistocene 58 fossils 58 anatomically modern 58 radiocarbon dating 57 Carboniferous 57 prehistory 57 Neanderthals 57 Bronze Age 57 Etruscans 57 hominin 56 taxa 56 trilobites 56 Pliocene 56 Archaic 55 microfossils 55 neolithic 55 theropod 55 hominids 55 megafauna 54 Cretaceous Period 54 theropods 54 phylogenetic 54 radiocarbon 53 Eocene 53 Neanderthal 53 Fertile Crescent 53 hunter gatherers 53 Australopithecus 53 Homo sapiens 52 Iron Age 52 Archaeopteryx 52 #BC [003] 52 Lower Cretaceous 52 Quaternary 52 Mesozoic 52 Cretaceous 52 middens 52 primate species 52 marine sediments 51 clades 51 Triassic 51 mammoths 51 fossil 51 Ordovician 51 ancient Mesopotamia 51 Pre Columbian 51 Sumerians 51 Hellenistic 51 abundances 51 marine reptiles 51 Homo erectus 50 pottery shards 50 isotopic 50 mastodons 50 calcareous 50 Precambrian 50 marine invertebrates 50 tetrapods 50 morphological 50 Tiktaalik 50 lake sediments 50 antiquity 50 Australopithecus afarensis 50 millennium BC 50 paleontological 50 preindustrial 50 paleo 50 Homo habilis 50 carnivorous dinosaurs 49 arrowheads 49 hadrosaur 49 hominid 49 arthropod 49 sauropods 49 phylogeny 49 tyrannosaur 49 dinosaur footprints 49 Poinar 49 flints 49 morphologies 49 vertebrate species 49 Paleozoic 49 pictographs 49 genus Homo 48 fossilized 48 Achaemenid 48 Sassanid 48 ancient 48 Oligocene 48 haplotypes 48 chert 48 baleen whales