Related by context. Frequent words. (Click for all words.) 57 Homo sapiens 57 Homo habilis 56 common ancestor 55 hominids 55 hominid 54 lineages 54 tyrannosaur 54 Homo erectus 54 primate species 54 vertebrates 53 carnivorous dinosaurs 53 Neandertals 53 mammalian species 53 vertebrate 52 Ardipithecus 52 mammals 52 theropods 52 homo sapiens 51 Australopithecus 51 Archaeopteryx 51 vertebrate species 51 anatomically modern 51 palaeontology 51 phylogeny 51 dinosaurs 51 humans 51 evolutionary biologists 50 Denisovans 50 evolutionary 50 single celled organisms 50 fossils 50 genome sequenced 50 multicellular 49 sauropods 49 chimpanzees 49 pterosaurs 49 genome sequences 49 genetic variability 49 evolutionarily 49 palaeontologists 49 interbred 49 genetic variation 49 taxa 49 Australopithecus afarensis 48 clades 48 apes 48 tyrannosaurs 48 tetrapods 48 genomes 48 eukaryotes 48 fossilized remains 48 sauropod 47 forelimbs 47 megafauna 47 baleen whales 47 fossil 47 avian influenza viruses 47 species 47 mammalian 47 Paabo 47 nonhuman primates 47 hind limbs 47 behavioral traits 47 Longrich 46 reproductive biology 46 coronaviruses 46 taxonomists 46 mammal 46 geneticists 46 Neanderthals 46 morphologies 46 ancestor 46 Cretaceous Period 46 mammoths 46 single celled 46 primates 46 archaea 46 Paleontologists 46 phylogenetic 46 coelacanth 46 Tyrannosaurus rex 45 gene sequences 45 Tiktaalik 45 susceptibility genes 45 Velociraptor 45 genetics 45 clade 45 pterosaur 45 arthropods 45 mammal species 45 gene expression patterns 44 tuatara 44 arthropod 44 genetic diversity 44 speciation 44 landmasses 44 flightless birds 44 Homo floresiensis 44 bonobos 44 thylacine 44 Archaea