Related by context. Frequent words. (Click for all words.) 70 pterosaur 69 Archaeopteryx 64 pterosaurs 64 theropod 62 theropods 59 forelimbs 58 tetrapods 57 Tiktaalik 56 tyrannosaur 55 pectoral fins 55 Vertebrate Paleontology 54 fossils 54 carnivorous dinosaurs 54 Velociraptor 54 sauropods 54 Longrich 54 Ardipithecus 53 flightless 53 mammalian species 53 vertebrates 53 fossil 53 sauropod 53 hadrosaur 53 subfamily 52 vertebrate 52 palaeontologists 52 hind limbs 52 Homo habilis 51 microsatellites 51 bipedalism 51 clouded leopard 51 genus Homo 51 T. rex 50 mammalian 50 Australopithecus afarensis 50 Australopithecus 50 melanosomes 50 fossilized remains 50 flightless birds 50 Neandertal 50 damselflies 50 vertebrate species 49 hominins 49 skinks 49 arthropod 49 morphologies 49 taxa 49 hominid 49 fruit fly Drosophila 49 velociraptor 49 thylacine 49 pterodactyls 49 mammals 49 coronaviruses 49 primate species 48 triceratops 48 phylogeny 48 dragonfly 48 dinosaurs 48 dinosaur 48 microsatellite 48 Neandertals 48 mammal species 48 sea anemone 48 bipedal 48 genus 48 species 48 pterodactyl 48 capuchin monkeys 48 mammal 48 evolutionary biologists 48 webbed feet 48 asexual reproduction 47 plesiosaur 47 coelacanth 47 hominin 47 Homo floresiensis 47 avian influenza viruses 47 evolutionary 47 clade 47 lemur 47 paleontologists 47 marine reptiles 47 avian species 47 Paabo 47 dinos 47 multicellular organisms 47 morphology 47 dragonflies 46 locomotion 46 flightless bird 46 lemurs 46 Drosophila 46 phylogenetic 46 tyrannosaurs 46 moa 46 rhesus monkey 46 foot wingspan 46 Cretaceous Period 46 Homo erectus 46 birdlike