Related by context. Frequent words. (Click for all words.) 58 % #gt 54 l l 53 z = 52 % #lt ;/ 51 p 51 Ice Ages 49 unicellular 49 mol 49 Early Cretaceous 49 Homo sapiens 49 oxygen isotope 48 #:#-# [028] 48 H. sapiens 48 isotope ratios 48 lithosphere 48 Fig. 48 #:#-# [002] 48 ref. 48 poleward 47 #:#-# [029] 47 q = 47 placental mammals 47 ° N 47 Cenozoic 46 Scientists theorize 46 Oort cloud 46 Gondwanaland 46 Neandertals 46 #:#-# [033] 46 Jurassic Period 46 metamorphism 46 Late Triassic 46 #:#-# [037] 46 #:#-# [023] 45 Cancer Res 45 solar nebula 45 deglaciation 45 Beringia 45 haplogroup 45 biogeography 45 glaciations 45 biogeochemical 45 supercontinent 45 Earthlike 45 heavily cratered 45 nid 45 zircons 45 CFB TRENTON Ont 45 radiocarbon dated 45 homo sapiens 44 photosphere 44 archaea 44 Upper Paleolithic 44 goethite 44 CNA ls 44 h 44 earths 44 Medieval Warm Period 44 WASP #b 44 Snowball Earth 44 y u 44 comet Wild 44 Free Full Text 44 Archaean 44 relict 44 extrasolar 43 Siberian permafrost 43 Europolitics 43 multicellular organisms 43 marine sediments 43 isotopic 43 abiotic 43 mmj 43 magmas 43 Late Cretaceous 43 continental drift 43 temperate regions 43 protoplanetary disk 43 CNA ir 43 nanobacteria 43 #:#-# [016] 43 pp. #-# [005] 43 primate evolution 43 Cretaceous Period 43 polar vortex 43 epochs 43 multicellular 43 np 43 faunal 43 Little Ice Age 43 #:#-# [003] 43 maxima 43 volcanic vents 43 interglacial period 43 equatorial Pacific 43 Cambrian explosion 43 lavas 42 Rs.# w 42 planetesimals 42 sd 42 WSJE