Related by context. Frequent words. (Click for all words.) 60 Ardipithecus ramidus 60 primate evolution 60 H. sapiens 60 feathered dinosaurs 59 placental mammals 59 hominin 58 anthropoids 58 vertebrate animals 58 evolutionary origins 58 theropod 57 erectus 57 H. erectus 57 Indohyus 57 hominid 56 theropod dinosaurs 56 lowland gorillas 56 carnivorous dinosaurs 56 Homo sapiens 56 marine reptiles 55 Australopithecus 55 Archaeopteryx 55 multicellular organisms 55 genus Homo 55 Neandertal 55 tyrannosaur 55 Ardipithecus 55 tetrapod 55 Tiktaalik 55 fossilized remains 55 humans 54 Homo erectus 54 plesiosaurs 54 afarensis 54 Homo habilis 54 hominins 54 Fossilized 53 apelike 53 vertebrate species 53 anthropoid 53 tyrannosaurs 53 Australopithecus afarensis 53 mammalian species 53 baleen whale 53 hominids 53 carnivorous dinosaur 52 mammals reptiles 52 gut microbiota 52 Raptorex 52 theropods 52 mitochondrial genome 52 tyrannosaurus 52 reproduce asexually 52 wooly mammoth 52 mammals 52 ground sloths 52 Radiocarbon dating 52 Homo Sapiens 52 horned dinosaur 52 mammal 52 vertebrates 51 Cretaceous Period 51 macroevolution 51 flatworms 51 evolutionary adaptation 51 mammalian 51 Gansus 51 crocodilian 51 saber toothed tigers 51 dinosaurs 51 species Homo sapiens 51 single celled organisms 51 megafauna 51 unicellular 51 prehistoric 51 Palaeolithic 50 monkeys apes 50 homo sapiens 50 thylacine 50 fossil 50 extinct species 50 woolly mammoths 50 primates 50 Evolutionary biologists 50 Diplodocus 50 apes 50 saber toothed cat 50 Tyrannosaurus rex 50 Jurassic Period 50 Neandertals 50 Mummified 50 Tasmanian tiger 50 fossils 50 tetrapods 50 methylation patterns 50 Cambrian explosion 50 coprolites 50 nonhuman animals 50 fossilization 50 vertebrate 50 fossilized 50 developmental abnormalities