Related by context. Frequent words. (Click for all words.) 66 Tiktaalik 66 tetrapod 63 tetrapods 62 theropod 61 Indohyus 61 hominins 59 Ardipithecus 59 Australopithecus 59 Neandertal 58 Archaeopteryx 58 feathered dinosaurs 58 marine reptiles 58 bipedalism 57 Neandertals 57 anthropoids 57 theropods 57 Homo habilis 56 fossils 56 sauropods 56 H. erectus 55 forelimbs 55 coelacanth 55 afarensis 55 carnivorous dinosaurs 55 Denisovans 55 vertebrates 55 Homo erectus 54 melanosomes 54 marine invertebrates 54 planktonic 54 mammals 54 LB1 53 hominid 53 hominids 53 morphologically 53 crocodilians 53 multicellular 53 evolutionary 53 phylogenetic 53 sauropod 53 microfossils 53 single celled organisms 52 hominin 52 fossilization 52 Neanderthal DNA 52 baleen whales 52 prokaryotes 52 vertebrate 52 evolutionarily 52 genus Homo 52 phylogeny 52 multicellular organisms 52 diatoms 52 pterosaur 52 angiosperms 52 eukaryotic cells 51 morphologies 51 taxa 51 Archaea 51 morphological 51 Late Cretaceous 51 phyla 51 mammalian species 51 foraminifera 51 Longrich 51 single celled 51 mammalian brain 51 Caenorhabditis elegans 51 plesiosaur 51 imprinted genes 50 tyrannosaurs 50 terrestrial ecosystems 50 trilobites 50 coprolites 50 asexual reproduction 50 subfamily 50 pterosaurs 50 amino acid sequences 50 ecological niches 50 dinosaurs 50 fossilized remains 50 otoliths 50 stickleback 50 tyrannosaur 49 Australopithecus afarensis 49 bipeds 49 palaeontologists 49 flagellum 49 stromatolites 49 symbionts 49 Homo sapiens 49 hadrosaur 49 hind limbs 49 clade 49 evolutionary biologists 49 abiotic 49 Poinar 49 organisms 49 clades 48 fossil 48 arthropod