Related by context. All words. (Click for frequent words.) 72 Late Triassic 70 Devonian Period 67 Neoproterozoic 67 Late Cretaceous 66 Cambrian Period 66 Neogene 66 Early Cretaceous 66 Cenozoic Era 65 Jurassic Period 65 Ordovician 64 Carboniferous 64 Archaean 64 Cretaceous Paleogene 64 Permian Period 64 Late Ordovician 64 Permian Triassic 63 Tertiary Period 63 Triassic Period 63 Ediacaran 63 Late Jurassic 63 Eocene Epoch 63 Miocene epoch 63 Cretaceous Period 62 Permian Triassic boundary 62 Cenozoic 62 Eocene epoch 62 Noachian 62 Oligocene epoch 62 Plio Pleistocene 61 Paleocene Eocene Thermal Maximum 61 Middle Miocene 61 Ediacaran Period 61 bony fishes 61 Mesozoic era 61 Paleogene 61 Late Miocene 61 Panderichthys 60 Neoproterozoic era 60 Triassic 60 Pliocene 60 mya 60 faunas 60 Pleistocene epoch 60 Acanthostega 60 angiosperm 60 faunal 60 brachiopods 60 ornithischians 60 isotopic compositions 60 coccolithophores 60 Paleozoic Era 60 Eocene 60 Ediacara 60 Cambrian explosion 59 Paleocene 59 Last Glacial Maximum 59 Cretaceous periods 59 planktonic foraminifera 59 Cretaceous 59 Upper Triassic 59 Late Cretaceous Period 59 Gondwanaland 59 trilobites 59 marine sediments 59 lobe finned fishes 59 foraminifera 59 Permian extinction 59 Cambrian Explosion 59 Middle Paleolithic 59 glaciations 59 ramidus 59 basaltic rocks 59 avian dinosaurs 58 Triassic Jurassic 58 Palaeozoic 58 Pleistocene 58 Late Pleistocene 58 Castorocauda 58 eukaryote 58 Precambrian 58 Upper Paleolithic 58 Cretaceous Tertiary 58 crinoids 58 biogeographic 58 deglaciation 58 Middle Pleistocene 58 Miocene Epoch 58 humans Homo sapiens 58 vertebrate fossils 57 lobe finned fish 57 interglacial 57 Mesozoic Era 57 Hadean 57 sedimentary deposits 57 taxa 57 Permo Triassic 57 stromatolites 57 Upper Palaeolithic 57 Paleozoic era 57 kyr 57 terrestrial vertebrates 57 Paleozoic 57 benthic foraminifera 57 Pleistocene Ice Age 57 Mesozoic 57 interglacial period 57 supercontinent 57 Paranthropus robustus 57 Cenozoic era 57 Carboniferous Period 57 dromaeosaurid 57 relict 57 Great Oxidation Event 57 KT boundary 57 Phanerozoic 56 Quaternary 56 mosasaurs 56 Pre Cambrian 56 ostracods 56 animal phyla 56 monophyletic 56 sauropodomorphs 56 angiosperms 56 bryozoans 56 glaciation 56 H. habilis 56 Middle Devonian 56 Pleistocene Epoch 56 Younger Dryas 56 Proterozoic 56 basalts 56 forams 56 Heterodontosaurus 56 multicellular animals 56 Gigantopithecus 56 isotope ratios 56 Eocene Oligocene 56 Icadyptes 56 Noachian era 56 interglacial periods 56 ecoregions 56 terrestrial ecosystems 56 Cretaceous Paleogene boundary 56 magmatism 56 Snowball Earth 56 isopods 55 dromaeosaurs 55 Pleistocene Age 55 planktonic 55 warm interglacial 55 megalodon 55 Burgess Shale 55 Cryogenian 55 herbivorous dinosaurs 55 Sr Ca 55 mammal fossils 55 Stegodon 55 stromatolite 55 Middle Eocene 55 hominid evolution 55 tiny single celled 55 suborder 55 seafloor sediments 55 Oligocene 55 plesiosaurs 55 diatoms 55 Devonian 55 Ichthyostega 55 robustus 55 carboniferous 55 iridium layer 55 Lower Cretaceous 55 ecoregion 55 bird Archaeopteryx 55 placental mammals 55 Eemian 55 Late Paleozoic 55 Cenomanian 55 Ice Ages 55 Aptian 55 Porites 54 metazoan 54 sediments deposited 54 evaporite 54 Tiktaalik 54 Sauropods 54 depositional environment 54 GtC 54 Mammalia 54 phyllosilicate 54 interglacials 54 vesper bats 54 Myr 54 Gondwanan 54 Pliocene epoch 54 paleoenvironmental 54 Climatic Optimum 54 anthropoid primates 54 Homo antecessor 54 placental mammal 54 Nectocaris 54 Cambrian Ordovician 54 golden toad 54 Gneiss 54 ichthyosaurs 54 amphipods 54 Laurasia 54 bilaterians 54 Mesoproterozoic 54 geochronology 54 Acropora 54 carbonate sediments 54 ocean basins 54 paleomagnetic 54 coral skeletons 54 metazoans 54 mammal extinctions 54 Palaeozoic era 53 Medieval Warm Period 53 Mio Pliocene 53 Homo sapiens evolved 53 Laurentide Ice Sheet 53 Paranthropus 53 hominid fossil 53 diatom species 53 anoxic 53 Genyornis 53 phyllosilicates 53 granitoids 53 Sedimentary rocks 53 C4 grasses 53 bonebed 53 freshwater snails 53 placentals 53 tetrapod 53 multi decadal 53 ophiolite 53 glacial interglacial 53 Paleoindian 53 Holocene 53 sulphidic 53 Paleoproterozoic 53 Plesiosaurs 53 layered ultramafic 53 dwelling organisms 53 Surtsey 53 Quaternary Period 53 Asilisaurus 53 Prochlorococcus 53 terrestrial vertebrate 53 chondrites 53 hydrothermal vent 53 Million Years Ago 53 Alaskite 53 artiodactyls 53 Saqqaq 53 sulphide mineral 53 hominoids 53 evolutionary lineage 53 metapopulation 53 theropod dinosaur 53 glaciers retreated 53 chordates 53 multicellular 53 CAIs 53 auklets 53 Archaea 53 Critically Endangered species 53 paleochannel 53 goethite 53 anorthosite 53 Beringia 53 paleoclimatic 53 earliest tetrapods 53 carbonaceous chondrites 53 Anchiornis huxleyi 53 crocodilians 53 biogeographical 53 Palaeocene Eocene Thermal Maximum 53 montane 53 anamensis 53 glaciers receded 53 Messinian 53 Upper Jurassic 53 archaea 52 cretaceous 52 echinoderm 52 cratons 52 archeopteryx 52 geological epoch 52 megafaunal 52 Cretaceous Tertiary boundary 52 invertebrate animals 52 mass extinctions 52 carbonaceous chondrite 52 dinosaur precursors 52 australopithecines 52 flatfishes 52 southern supercontinent 52 isotopic composition 52 terranes 52 archosaurs 52 Proteobacteria 52 Seagull Intrusion 52 Puijila 52 Toba eruption 52 archaeal 52 megadrought 52 gymnosperms 52 abyssal plain 52 Iguanodon 52 igneous rocks 52 Navajo Sandstone 52 peridotites 52 hominid species 52 megafauna 52 conodonts 52 Caenorhabditis 52 Jurassic Triassic 52 protists 52 Ardipithecus ramidus 52 A. thaliana 52 Kipawa Deposit 52 benthic 52 martian meteorites 52 Paleo Indian 52 Galapagos Archipelago 52 polymictic conglomerate 52 Zootaxa 52 Eoraptor 52 vertebrate evolution 52 Woolly mammoths 52 Homo heidelbergensis 52 El Niño Southern Oscillation 52 carnivorous mammals 52 atmospheric CO 52 tetrapods 52 phylogenetically 52 Paleobiology Database 52 Argentinosaurus 52 phylogenies 52 methanogens 52 ppbv 52 eastern lowland gorilla 52 ancient supercontinent 52 Palaeozoic sedimentary 52 glacial cycles 52 continental crust 52 dolomites 52 Ichthyological Exploration 52 reef corals 52 seabed sediments 52 Cretaceous Tertiary extinction 52 shell midden 52 habilis 52 toothed whale 52 Darwin finches 52 Tawa hallae 52 Anthropocene 52 oxygen isotope ratios 52 liverworts 52 Europasaurus 52 vertebrate species 52 Mammuthus 52 crurotarsans 52 sedimentary sequences 52 sedimentary layers 52 siliciclastic 52 Lophelia 52 Cretaceous extinction 52 Doushantuo Formation 52 Pleistocene era 52 multicellular organisms 52 Confuciusornis 52 superheavy elements 52 NWHI 52 plutonic rocks 52 Hesperian epoch 52 Laurentide ice sheet 51 Jaekelopterus 51 Ice Age mammals 51 Miocene 51 molecular phylogenetic 51 Laramidia 51 isotope composition 51 Indricotherium 51 refugia 51 Paleocene Eocene 51 Lower Jurassic 51 Quaternary Science Reviews 51 anomodonts 51 Data Deficient 51 siderite 51 evaporite deposits 51 Noachian period 51 marine invertebrates 51 Weddell seals 51 Cretaceous Jurassic 51 seafloor sediment 51 Mesolithic 51 basinal 51 phylogeographic 51 mid Pliocene 51 microfossils 51 evolutionary divergence 51 Orogeny 51 Arabia Terra 51 Osedax 51 calcareous 51 accretionary 51 BIFs 51 toothed whales 51 depositional 51 Little Ice Age 51 Irvingtonian period 51 Sahelanthropus tchadensis 51 photosynthetic organisms 51 volcano sedimentary sequences 51 Homo ergaster 51 Permian Triassic extinction 51 wild Bactrian camels 51 Tiktaalik roseae 51 Martian meteorites 51 pliosaur ferocious predator 51 phyla 51 turbidites 51 amphibolite facies 51 temperate forests 51 Linheraptor 51 prehistoric lizard 51 endophytic 51 ferruginous 51 Ordovician extinction 51 prokaryotes 51 olivines 51 cnidarians 51 hominid fossils 51 giganteus 51 Upper Carboniferous 51 diatom 51 sensu lato 51 felsic intrusive rocks 51 Dromomeron 51 carbon isotopes 51 molluscan 51 granite gneiss 51 Early Bronze Age 51 Massospondylus 51 Fig. 1b 51 conifers ferns 51 geophysically 51 sister taxon 51 Mass Extinction 51 comb jelly 51 Palouse prairie 51 H. erectus 51 otolith 51 pelitic gneiss 51 Antarctic krill 51 supercontinent Pangaea 51 phytoplankton biomass 51 subfamilies 51 aragonite 51 staghorn coral 51 frilled shark 51 Homo neanderthalensis 51 macrofauna 51 clades 51 Homo species 51 paradoxus 51 Early Archaic 51 extinct mammals 51 benthos 51 Maastrichtian 51 orogenic gold deposits 51 Mistaken Point 51 gabbros 51 lunar meteorites 51 volcanic sediments 51 single celled microbes 51 carnivore species 51 coelacanths 51 Kure Atoll 51 magmatic 51 atmospheric methane 51 Ordovician limestone 51 A. ramidus 50 Tunguska meteorite 50 Lower Proterozoic 50 Early Cretaceous Period 50 Appy Sluijs 50 ray finned 50 primitive organisms 50 olivine rich 50 silicic 50 intensely oxidized 50 cherts 50 multicellular creatures 50 cetacean species 50 archosaur 50 marine reptiles 50 primate lineage 50 lunar crust 50 seabird species 50 tyrannosaurids 50 Mg Ca 50 colluvial 50 lowland tropical 50 Upper Miocene 50 Paleozoic carbonate 50 hominin fossils 50 Mesozoic mammals 50 vertebrates 50 upland forests 50 single celled algae 50 bryophytes 50 sedimentological 50 morphologically distinct 50 sauropod dinosaur 50 Precambrian rocks 50 Jurassic Cretaceous 50 genus Australopithecus 50 hominin species 50 antarctica 50 stibnite 50 Archaeopteryx 50 Cetomimidae 50 jawed vertebrates 50 carbon isotope ratios 50 single celled 50 interannual 50 tuffaceous rocks 50 Stromatolites 50 species Australopithecus afarensis 50 solar nebula 50 ontogenetic 50 Medieval Warming 50 craton 50 clastic sediments 50 sauropod dinosaurs 50 Gobero 50 colonizations 50 clade 50 megadroughts 50 SN #/#/# [002] 50 Miocene Pliocene 50 earliest hominid 50 Atmospheric CO2 50 subarctic regions 50 vertebrate animals 50 baleen whale 50 oxygen isotopic composition 50 amphibolite 50 ppm CO2 50 eudialyte 50 female gametophyte 50 G#.# +#.# 50 biogeography 50 elkhorn corals 50 Athabasca sandstone 50 Prototaxites 50 Middle Awash 50 mass extinction 50 Fig. 1A 50 primitive meteorites 50 multi celled 50 species 50 mammoths roamed 50 paleoclimate 50 fossilized pollen 50 lavas 50 halite 50 lake sediments 50 carbonatites 50 hornblende 50 Kerguelen Plateau 50 quartz feldspar porphyries 50 Palaeo 50 amphibian species 50 GJ#b 50 sengi 50 sedimentary rocks 50 Archaic Period 50 claystone 50 Late Archaic 50 mtDNA sequence 50 terrestrial mammals 50 yr -1 50 volcanism 50 sulphide deposits 50 Bristlecone pines 50 huxleyi 50 Dinosauria 50 radiometric dating 50 nomadic hunter gatherers 50 evaporite minerals 50 Australopithecus africanus 50 fossilized creatures 50 reionization 50 Turonian 50 Trichodesmium 49 ultramafic rock 49 reef fishes 49 feathered dinosaur 49 abundances 49 Holocene epoch 49 Jin Dynasty 49 sauropodomorph 49 lacustrine 49 nuclides 49 calc alkaline 49 andesitic rocks 49 coelurosaurs 49 Preclassic 49 fearsome Tyrannosaurus rex 49 orogenic 49 Minoan civilization 49 Jurassic formations 49 surficial 49 metamorphism 49 temperate grasslands 49 astronomer Ptolemy 49 niobium mineralization 49 theropod 49 unconformably overlain 49 Trilobites 49 tectonic plate movements 49 Triassic formations 49 microbialites 49 bce 49 KT extinction 49 Cryogenian period 49 hominoid 49 radiocarbon dated 49 Australopithecus anamensis 49 baleen whales 49 Roman Warm Period 49 Wrangel Island 49 sea scorpions 49 Neanderthals Homo neanderthalensis 49 fossilisation 49 Earth biosphere 49 carbonate minerals 49 beech forests 49 olivine 49 Felsic 49 dinosaurs roamed 49 Liang Bua 49 Homo genus 49 monotremes 49 Ontario Lacus 49 Moche culture 49 supertree 49 Cretaceous Tertiary KT 49 Chazy Reef 49 long necked sauropod 49 Pan troglodytes 49 mitochondrial genomes 49 microhabitats 49 Cyanobacteria 49 Sulphide mineralization 49 invertebrate fauna 49 Psittacosaurus 49 glaciers melted 49 ichthyosaur 49 Hominids 49 volcanogenic 49 basaltic 49 ncRNA 49 geologic 49 IOCG deposits 49 insects crustaceans 49 smectite 49 predatory dinosaurs 49 mantle plumes 49 atmospheric CO2 concentration 49 anthropoids 49 partial skeleton 49 Bellingshausen Sea 49 biotopes 49 coral species 49 genus homo 49 Upper Cretaceous 49 kimberlite breccia 49 crinoid 49 ALH# 49 Papilio 49 distinct lineages 49 birdlike dinosaur 49 Seitaad ruessi 49 cytochrome b 49 subseafloor 49 stony corals 49 km3 49 atmospheric CO2 concentrations 49 redox sensitive 49 Ancestral Puebloans 49 Neotropical 49 Kipunji 49 tetrapods evolved 49 unfished 49 Symbiodinium 49 biodiverse ecosystems 49 coral Acropora 49 Ogasawara Islands 49 oceanic islands 49 paleo placer 49 teleost fish 49 Hesperian Epoch 49 geological strata 49 Late Bronze Age 49 pseudogenes 49 paleo 49 detrital 49 limbed vertebrates 49 Galapagos penguin 49 kha nyou 49 Guanlong wucaii 49 Balhae 49 rifting 49 amphibolites 49 biogeochemical processes 49 Outcrops 49 biogenic 49 decadal 49 seals sea lions 49 Palaeolithic 49 Ventastega 49 globulars 49 metavolcanics 49 zooplankton species 49 tropical coral reefs 49 pteropods 49 musculus 49 volcanic stratigraphy 49 supernova SN 49 deep convective clouds 49 ray finned fishes 49 oligotrophic 49 chemosynthetic 49 hunter gatherer tribes 49 Phytophthora species 49 unicellular 49 palaeo 49 rotifer 49 branching corals 49 mitochondrial Eve 49 eclogite 48 spatial scales 48 known bird Archaeopteryx 48 felsic intrusions 48 speleothems 48 mineralogical characteristics 48 quartz adularia 48 elkhorn 48 freshwater fishes 48 Brigham Grette 48 borealis 48 Turiasaurus 48 illite 48 echinoderms 48 eukaryotes 48 called Abydosaurus mcintoshi 48 exhalite 48 noctilucent clouds 48 stratigraphically 48 mineralized diorite 48 systematics 48 hydrothermally 48 Anthony Barnosky 48 Paleozoic sedimentary 48 Paleolithic Era 48 Asteraceae 48 silicate mantle 48 comet nuclei 48 fossils unearthed 48 lithosphere 48 homo erectus 48 Scotian Shelf 48 biospheric 48 Kosmoceratops richardsoni 48 Sarahsaurus 48 granitoid rocks 48 therizinosaurs 48 Jakobshavn 48 warmings 48 phreatic 48 Laonastes 48 Dakosaurus andiniensis 48 hominid lineage 48 Lasius 48 large oceanic plateaus 48 otoliths 48 endemism 48 biota 48 Middle Jurassic 48 CoML 48 Haast eagle 48 facies 48 Blainville beaked whales 48 pelitic 48 Caral Supe 48 hyena dung 48 bipedal ape 48 mammal lineages 48 Diporeia 48 sulphide veins 48 neutrino mass 48 microscopic phytoplankton 48 siliceous breccia 48 mammals 48 Metasequoia 48 Laetoli Tanzania 48 staghorn corals 48 Sinosauropteryx 48 subpolar 48 paragneiss 48 Milankovitch 48 holotype 48 magnetotactic bacteria 48 volcanic caldera 48 spodumene bearing 48 grabens 48 δ 48 Coelophysis 48 Hadean Eon 48 Ardipithecus 48 quartz feldspar gneiss 48 Powelliphanta 48 Spinosaurus 48 arthropods 48 oceanic crust 48 phenotypic variation 48 aeolian 48 winged dinosaur 48 Leduc Formation 48 coeval 48 Ordovician Silurian 48 fine grained sediment 48 granodiorites 48 exo planet 48 gabbro dyke 48 boreal regions 48 africanus 48 Gakkel Ridge 48 crustal rocks 48 biotite alteration 48 sulfur isotopes 48 Au Cu mineralization 48 dinosaurian 48 Palaeocene 48 pyrrhotite chalcopyrite 48 theropods 48 footed albatross 48 silicified zone 48 brevirostris 48 biosphere 48 Gnostic sect 48 T. hallae 48 eolian 48 Cretaceous sediments 48 Tarbosaurus 48 biodiversity hotspots 48 Southern Oscillation 48 Domoic acid neurotoxin 48 supercontinents 48 bison lumbered 48 Repenomamus 48 Jurassic sandstone 48 Martian meteorite 48 Dry Valleys 48 altered felsic 48 Mapusaurus roseae 48 floras 48 warm interglacial periods 48 Least Concern 48 subglacial lake 48 Sinus Meridiani 48 biodiversity hotspot 48 orthologs 48 H. heidelbergensis 48 orbital eccentricity 48 Diatoms 48 tektites 48 Bristlecone Pine 48 kipunji 48 coprolite 48 sedimentary rock 48 Siple Dome 48 Jurassic limestone 48 biogeochemical 48 Tursiops 48 previously unstudied 48 subglacial lakes 48 quartz pebble conglomerate 48 Beta Pictoris 48 chlorophyll concentrations 48 Zechstein 48 Fig. 4A 48 Larsen Ice Shelf 48 Olduvai 48 necked dinosaurs 48 Sauropod 48 Dolores Piperno 48 Subarctic 48 ancestral Puebloan 48 microscopic single celled 48 basal sandstone 48 Jurassic 48 Kootenai sturgeon 48 polychaete worms 48 evolutionary lineages 48 neotropical 48 subglacial 48 nicknamed Ardi 48 phylogenetic 48 Nechalacho deposit 48 marsupial mammals 48 terrestrial biosphere 48 vertebrate fossil 48 sedimentary 48 preserved fossils 48 Chacoan 48 Proterozoic age 48 Paedocypris 48 Archean rocks 48 gossans 48 megalodon shark 48 granodiorite intrusive 48 ostracodes 48 giant squid Architeuthis 48 bonneted bat 48 ectodermal 48 mineralized mafic 48 auks 48 Middle Palaeolithic 48 leached capping 48 eukaryotic 48 Matoush fault 48 post perovskite 48 glacial interglacial cycles 48 Mannville Swan River 48 lowermost mantle 48 strontium isotope 48 Neanderthal extinction 48 hunter gatherer societies 48 Shiveluch 48 Bedout 48 volcaniclastic rocks 48 copepod 48 zooplankton 47 interannual variability 47 GBDH 47 carbon fluxes 47 therizinosaur 47 Carcharhinus 47 altitudinal 47 Coelacanth 47 stony coral 47 plutons 47 volcanogenic massive sulfide VMS 47 endosymbiosis 47 mitochondrial genome sequence 47 oligomeric 47 Paleolithic Age 47 Ediacara organisms 47 porphyry intrusions 47 Silurian 47 sulfide deposits 47 hominins 47 climatic variability 47 tropical latitudes 47 plesiosaur 47 bryozoan 47 Aurignacian 47 chimpanzees Pan troglodytes 47 Copeia 47 Dikika 47 Inca Empire 47 Raptorex kriegsteini 47 sifaka 47 herbarium specimens 47 vertebrate 47 strongly foliated 47 homo sapiens sapiens 47 Australopithecus 47 meteorite bombardment 47 metamorphic rocks 47 Jakobshavn Isbrae 47 diorites 47 Wollemi pine 47 volcanic islands 47 pyrophyllite 47 Falcarius 47 amphioxus 47 cichlid species 47 oxygen isotope 47 Near Threatened 47 Seagrasses