Related by context. Frequent words. (Click for all words.) 59 radiocarbon dating 58 Radiocarbon dating 53 radiocarbon 52 microfossils 52 elemental composition 49 sediment cores 49 Palaeolithic 49 coprolites 48 isotopic 47 systematics 47 paleoanthropologist 47 marine sediments 47 stromatolites 46 prehistoric 46 archaeologists 46 lake sediments 46 fossilization 46 Archeologist 46 fossils 46 excavated 45 nanosized 45 middens 45 archeologists 45 papyri 45 Otzi 45 paleontologists 45 Fossilized 44 hominins 44 zircons 44 Columbian mammoth 44 flint tools 44 igneous rocks 44 bioengineers 44 ancient Mayans 44 sediment samples 43 Computer simulations 43 Neandertal 43 Soil samples 43 Archeologists 43 Palaeontology 43 sedimentary rock 43 stalagmite 43 Ancient Egyptians 43 biogeochemical 43 Mesolithic 43 ancient Egyptians 43 hydrothermal vent 43 numerical modeling 43 geomorphology 43 Cyanobacteria 43 Pre Columbian 42 fossilized bones 42 Geochemical 42 igneous rock 42 pre Incan 42 Anthropologists 42 Microscopic 42 Etruscans 42 laboratory experiments 42 Paleolithic 42 paleoclimate 42 Archaeologist 42 pottery shards 42 archeological digs 42 ancient 42 Newswise Researchers 42 carbonized 42 fossilized 42 archaeological 42 petroglyph 42 Antikythera Mechanism 42 mud volcanoes 42 geochemistry 42 Geochemistry 42 lava tubes 41 skull fragments 41 Chaco Canyon 41 Archeological 41 reanalyzed 41 Plant Biology 41 researchers 41 theropods 41 H. erectus 41 Martian rocks 41 Archaeologists 41 fossil 41 ground penetrating radar 41 computer simulations 41 journal Geology 41 Paleontologist 41 spherules 41 trackways 41 depositional 41 Anthropological 41 arrowheads 41 Poinar 41 paleontological 41 anthropologists 41 Prehistoric 41 afarensis 41 postdoctoral associate