Related by context. Frequent words. (Click for all words.) 60 microfossils 58 geomorphology 57 marine sediments 56 systematics 54 paleoanthropologist 54 biogeochemistry 53 paleoclimate 53 palaeontology 53 fossils 53 palaeontologists 52 Geochemistry 52 biogeochemical 52 hydrothermal vent 52 fossil 52 marine invertebrates 52 elemental composition 52 palaeontologist 52 mud volcanoes 52 diatom 52 sediment cores 51 stromatolites 51 radiocarbon dating 51 Poinar 51 evolutionary biologists 51 lake sediments 51 neurobiologists 51 Ardipithecus ramidus 50 paleontological 50 biogeography 50 terrestrial ecosystems 50 diatoms 50 HHMI investigator 50 astrobiologists 50 Palaeontology 50 numerical modeling 50 forest ecologist 50 ethnologist 50 lichens 50 scientists 50 coprolites 50 evolutionary biologist 50 geoscientist 50 paleontologists 50 otoliths 50 geodesy 49 ecologists 49 Ardipithecus 49 marine reptiles 49 Cambrian explosion 49 isotopic 49 Palaeolithic 49 abiotic 49 mycology 49 molecular mechanisms underlying 49 Botanists 49 geochemist 49 journal Geology 49 developmental biologist 49 Ecology Letters 49 University Lamont Doherty 49 biologists 49 computational methods 49 prokaryotes 48 Paleontologist 48 isotopic composition 48 angiosperms 48 atmospheric chemist 48 comparative genomics 48 botanist 48 fossilization 48 Archaeopteryx 48 cognitive neuroscientist 48 botanists 48 Zoologists 48 morphological 48 endocrine disruption 48 iron fertilization 48 Cyanobacteria 48 Paleoanthropology 48 marine ecologist 48 radiocarbon 48 C. elegans 48 multicellular organisms 48 temperate forests 48 fossil hunter 48 biophysical 48 primatologists 48 mitochondrial genome 48 Paabo 48 paleontologist 48 biologist 47 convergent evolution 47 Burgess Shale 47 biological oceanographer 47 tetrapod 47 Indohyus 47 feathered dinosaurs 47 trilobites 47 Linnean Society 47 fossilized bones 47 eukaryotic cells