Related by context. Frequent words. (Click for all words.) 59 mosasaurs 59 americanus 58 horned dinosaurs 58 Falcarius 58 theropod 57 plesiosaurs 56 Paranthropus 56 Fossilized 56 ichthyosaur 56 horned dinosaur 56 crocodilian 55 unicellular 55 carnivorous dinosaurs 55 Raptorex 55 trilobite 55 kipunji 55 baleen whale 55 homo erectus 55 Carnivorous 55 transmissible spongiform encephalopathies 54 toothed whales 54 frogs salamanders 54 theropods 54 peccary 54 amphibians reptiles 54 Diplodocus 54 placental mammals 54 feathered dinosaurs 54 Apatosaurus 54 Columbian mammoth 54 carnivorous dinosaur 53 sapiens 53 dinosaur species 53 ground sloths 53 fossilized skull 53 canadensis 53 T.rex 53 simian virus 53 predatory dinosaurs 53 Homo sapiens 53 Australian aborigines 53 Indohyus 53 protists 53 wooly mammoths 52 mammal 52 chupacabras 52 wolf spider 52 australopithecines 52 H. sapiens 52 tyrannosaur 52 Ardipithecus ramidus 52 Ardipithecus 52 wolf spiders 52 Tiktaalik 52 apelike 52 Extinctions 52 convergent evolution 52 Cyanobacteria 52 vertebrate animals 52 Diatoms 52 hadrosaur 52 Mutated 52 tyrannosaurus 52 flagellin 52 Barn owls 52 single celled 52 arthropod 51 Pterosaurs 51 Vertebrate 51 Tyrannosaurus 51 sauropods 51 Stegosaurus 51 brachiosaurus 51 subfamily 51 hibernators 51 elegans 51 protozoan parasite 51 coevolution 51 Brusatte 51 triceratops 51 herbivorous 51 Jurassic era 51 vertebrate 51 Salamanders 51 sauropod 50 hermaphroditic 50 prehistoric 50 seals sea lions 50 morphologically 50 genus Homo 50 hominid species 50 teosinte 50 Smilodon 50 theropod dinosaurs 50 lizard 50 Borrelia burgdorferi 50 Brachiosaurus 50 cave dwelling 50 saber toothed cat 50 saber toothed tigers 50 elkhorn