Related by context. Frequent words. (Click for all words.) 60 fossilized skull 59 ichthyosaur 57 plesiosaurs 56 Vertebrate 56 Sociobiology 56 Stegosaurus 56 Palaeontologists 55 Raptorex 55 horned dinosaurs 55 Brusatte 55 Paleontologist 54 paleobiologist 54 Indohyus 54 T.rex 54 Biogeography 54 Apatosaurus 54 trilobite 54 Diplodocus 53 theropod 53 paleoanthropologist 53 Columbian mammoth 53 Torosaurus 53 hominid species 53 tyrannosaurus 53 theropod dinosaurs 53 coevolution 53 mosasaur 53 wooly mammoth 53 hadrosaur 53 Vertebrate Zoology 53 palaeontologist 53 Comparative Zoology 52 tyrannosaurus rex 52 stickleback 52 journal Biology Letters 52 Allosaurus 52 hadrosaurs 52 Herpetologists 51 Zoologist 51 Albertosaurus 51 Tyrannosaurus 51 baleen whale 51 feathered dinosaurs 51 ground sloths 51 Tiktaalik 51 braincase 51 triceratops 51 tigers leopards 51 sociobiology 50 crocodilian 50 Longrich 50 spotted hyenas 50 marine reptile 50 Darwinius 50 thylacine 50 Vertebrate Paleontology 50 toothed whales 50 palaeontologists 50 reproductive physiology 50 horned dinosaur 50 Current Anthropology 50 herbivorous 50 Linnean Society 50 Biology Letters 50 tyrannosaur 50 peccary 49 Paleoanthropology 49 Falcarius 49 carnivorous dinosaurs 49 zoologists 49 developmental biologist 49 dinosaur species 49 H. sapiens 49 A. afarensis 49 apelike 49 Fossilized 49 Amur leopard 49 brachiosaurus 49 woolly mammoths 49 Natural History Museum 48 mammal 48 pterosaur 48 lowland gorilla 48 Palaeontology 48 Megalodon 48 biogeography 48 Gigantoraptor 48 plesiosaur 48 systematics 48 anglerfish 48 behavioral ecologist 48 Alemseged 48 marine reptiles 48 mottled brown 48 flatworm 48 echinoderms 48 H. floresiensis 48 velociraptor 48 martens 48 Ardipithecus ramidus 48 Frans de Waal