Related by context. Frequent words. (Click for all words.) 53 LB1 53 hadrosaur 52 mitochondrial genome 52 feathered dinosaurs 52 melanosomes 51 Ardipithecus 51 fossilized remains 50 theropod 50 Tiktaalik 50 carnivorous dinosaurs 50 Indohyus 49 Archaeopteryx 49 hominins 49 mammalian species 48 prokaryotes 47 theropods 47 morphologic 47 nematode worms 47 fossilized 47 tyrannosaur 46 Australopithecus 46 multicellular organisms 46 hominin 46 fossilized bones 46 otoliths 46 tetrapod 46 eukaryotic cells 46 rhesus macaque 46 microfossils 46 clade 46 canine teeth 46 Homo habilis 46 Australopithecus afarensis 46 mammalian 46 mouse embryos 45 anthropoids 45 prion disease 45 Poinar 45 arthropod 45 vertebrate 45 FOXP2 45 genus Homo 45 T. rex 45 fossils 45 Homo floresiensis 45 Nigersaurus 45 Geneticists 45 fossilization 45 genetic mutation 45 subfamily 45 hominid 45 genetic alteration 45 nonhuman primates 45 amino acid sequences 45 mammal 44 coronaviruses 44 tetrapods 44 thylacine 44 PrP 44 foraminifera 44 palaeontologists 44 Neandertal 44 rhinoviruses 44 morphologically 44 phyla 44 gut microbes 44 Radiocarbon dating 44 genetic defects 44 imprinted genes 44 mouse embryo 44 Mitochondrial DNA 44 mammals 44 sauropod 44 pterosaur 44 microcephaly 43 genetically identical 43 primate species 43 marine reptiles 43 collagen fibers 43 morphological 43 Longrich 43 amyloid deposits 43 Columbian mammoth 43 Tyrannosaurus rex 43 dinosaur skeletons 43 Cerling 43 extinct species 43 dinosaur fossil 43 gene mutation 43 mutated genes 43 SORL1 43 H. erectus 43 saber toothed cat 43 arthropods 43 Paleontologists 43 tyrannosaurs 42 rhesus monkeys 42 rhesus monkey 42 fossil 42 paleoanthropologist 42 oxygen isotopes