Related by context. Frequent words. (Click for all words.) 62 Ardipithecus ramidus 61 Raptorex 61 placental mammals 61 theropod 61 hominid species 61 horned dinosaurs 60 baleen whale 60 Australopithecus 60 A. afarensis 59 horned dinosaur 59 afarensis 59 hominid fossils 59 Diplodocus 59 Tiktaalik 59 Indohyus 58 fossil specimens 58 sauropod 58 marine reptile 58 mosasaur 57 plesiosaurs 57 T.rex 57 hadrosaur 57 carnivorous dinosaurs 57 crocodilian 57 tyrannosaur 57 carnivorous dinosaur 56 tetrapod 56 mitochondrial genome 56 Columbian mammoth 56 trilobite 56 sauropods 56 vertebrate animals 56 H. erectus 56 crocodilians 55 tyrannosaurus 55 braincase 55 theropod dinosaurs 55 Ardipithecus 55 Radiocarbon dating 55 Apatosaurus 55 Nigersaurus 55 bony plates 55 Gansus 55 marine reptiles 54 fossilized remains 54 hominid 54 otolith 54 coelacanth 54 plesiosaur 54 apelike 54 ammonites 54 Gigantoraptor 54 hominin 54 feathered dinosaurs 54 Australopithecus afarensis 53 Fossilized 53 Xenopus 53 Neandertal 53 Brachiosaurus 53 fossils 53 dinosaur fossil 52 tyrannosaurus rex 52 hominins 52 theropods 52 tetrapods 52 pliosaur 52 beaked whale 52 foraminifera 52 LB1 52 medullary bone 52 Gondwanaland 52 erectus 52 titanosaur 52 amphipods 52 Early Cretaceous 52 H. sapiens 52 pterosaur 52 gharial 52 Otzi 52 pipefish 51 toothed whales 51 radiocarbon dated 51 primate species 51 Homo floresiensis 51 Tyrannosaurus rex 51 marine invertebrates 51 sea scorpion 51 Scientists theorize 51 anthropoids 51 Brusatte 51 fossilized bones 51 wooly mammoth 51 giant tortoise 51 Amur leopard 51 Palaeolithic 51 forelimb 51 Homo habilis 51 preserved fossils 51 triceratops 50 phyla 50 T. rex