Related by context. Frequent words. (Click for all words.) 65 hominin 63 hominins 61 H. erectus 59 hominid 59 feathered dinosaurs 58 theropod 58 theropods 58 genus Homo 57 Homo erectus 57 speciation 57 Cambrian explosion 57 hominids 57 Australopithecus 56 carnivorous dinosaurs 56 Homo sapiens 56 Denisovans 56 tetrapod 56 terrestrial ecosystems 55 Tiktaalik 55 Neandertals 55 Beringia 55 anatomically modern 55 vertebrate 55 Ardipithecus 55 domestication 54 tetrapods 54 taxa 54 phylogeny 54 sauropod 54 tyrannosaur 54 mammalian brain 53 mammals 53 marine invertebrates 53 bipedalism 53 phylogenetic 53 Late Cretaceous 53 prion disease 53 megafauna 53 vertebrates 52 Archaeopteryx 52 hadrosaur 52 mammal 52 morphological 52 coelacanth 52 microfossils 52 morphologies 52 mammalian species 52 monkeys apes 52 Neandertal 52 Homo habilis 52 multicellular organisms 52 mammalian 51 primate species 51 evolutionary 51 crocodilians 51 Pleistocene 51 genetic variability 51 clade 51 biogeography 51 asexual reproduction 51 Radiocarbon dating 51 Mesoamerica 50 lineages 50 pterosaur 50 P. falciparum 50 nitrogen fixation 50 Poinar 50 FOXP2 50 morphologically 50 Australopithecus afarensis 50 avian species 50 microbiota 50 sauropods 50 fossils 50 Homo floresiensis 50 clades 50 interglacial period 50 morphology 50 Cretaceous Period 50 LB1 50 genetic diversity 50 trophic 49 foraminifera 49 volcanism 49 Paleocene 49 translocations 49 mitochondrial genome 49 interglacial 49 Younger Dryas 49 Neanderthal DNA 49 melanosomes 49 planktonic 49 prehistory 49 marine sediments 49 Leishmania 49 reproductive biology 49 biome 49 baleen whales 48 stromatolites 48 supercontinent 48 ethnology