Related by context. Frequent words. (Click for all words.) 62 theropod 60 feathered dinosaurs 58 Archaeopteryx 55 tetrapod 55 tetrapods 54 anthropoids 54 tyrannosaur 54 theropods 54 sauropod 53 carnivorous dinosaurs 53 crocodilians 53 hominid 53 Indohyus 52 hominins 52 hadrosaur 52 mammal 52 pterosaur 52 Ardipithecus 52 Tiktaalik 52 Australopithecus 52 genus Homo 52 Triceratops 52 T. rex 51 H. erectus 51 mammalian species 51 lineages 51 mammals 51 marine reptiles 50 Cretaceous Period 50 sauropods 50 moa 50 genetically distinct 50 Neandertal 50 mitochondrial genome 50 tyrannosaurs 50 simian immunodeficiency virus 50 Neandertals 50 multicellular organisms 50 Australopithecus afarensis 49 Homo erectus 49 nonhuman primates 49 progenitor cell 49 fossils 49 vertebrate 49 Late Cretaceous 49 skink 49 pterosaurs 49 genus 49 triceratops 49 monkeys apes 49 herbivore 49 clades 49 subfamily 49 morphologically 48 fossil 48 herbivorous 48 Homo habilis 48 multicellular 48 Homo Sapiens 48 Homo sapiens 48 clade 48 plesiosaur 48 forelimbs 48 morphologies 48 Cambrian explosion 48 clouded leopard 48 avian species 48 fossilized remains 48 Denisovans 48 anatomically modern 48 taxa 47 flightless 47 dinosaurs 47 species 47 Homo floresiensis 47 phylogeny 47 LB1 47 prion disease 47 wooly mammoth 47 vertebrates 47 dinosaur 47 arthropod 47 hominin 47 translocations 47 vertebrate species 47 Poinar 47 interbred 47 Columbian mammoth 47 morphological 47 eukaryotic 47 single celled organisms 47 mammalian 46 thylacine 46 extinct species 46 coelacanth 46 homo sapiens 46 petrel 46 megafauna 46 Brachiosaurus 46 prokaryotes 46 asexual reproduction