Related by context. Frequent words. (Click for all words.) 66 lineages 63 tetrapods 61 theropod 61 clades 61 phylogeny 60 eukaryotic 60 mitochondrial genome 60 multicellular 60 genus Homo 60 prokaryotes 59 theropods 59 H. erectus 59 Archaea 58 multicellular organisms 58 carnivorous dinosaurs 58 taxa 57 mammalian species 57 morphologically 57 Homo sapiens 57 single celled 57 crocodilians 57 hominins 57 phylogenetic 57 Tiktaalik 57 subfamily 57 phylum 56 mammalian 56 Neandertal 56 evolutionarily 56 Homo Sapiens 56 bipedalism 56 Australopithecus 56 single celled organisms 56 Archaeopteryx 56 Neandertals 56 vertebrate species 56 mammals 56 evolutionary adaptation 56 archaea 55 vertebrate 55 Cambrian explosion 55 vertebrates 55 morphological 55 eukaryotes 55 marine reptiles 55 speciation 55 supercontinent 55 genetically distinct 55 mtDNA 55 clade 55 morphologies 55 tyrannosaurs 54 tyrannosaur 54 monkeys apes 54 marine invertebrates 54 thylacine 54 superfamily 54 eukaryotic cells 54 melanosomes 54 trilobites 54 homology 54 arthropod 54 gene sequences 54 microbiome 54 evolutionary 53 progenitors 53 FOXP2 53 diatom 53 genetic variability 53 hominids 53 DNA sequences 53 forelimbs 53 phenotype 53 genetic alteration 53 mutational 53 gene expression patterns 53 heterochromatin 53 genomes 53 diatoms 53 interbred 53 arthropods 53 pterosaur 52 taxonomic 52 common ancestor 52 terrestrial ecosystems 52 Homo erectus 52 Cretaceous Period 52 coronaviruses 52 Ardipithecus 52 microfossils 52 homo sapiens 52 pterosaurs 52 sauropods 52 Poinar 52 LB1 52 prion protein 51 prion proteins 51 amino acid sequence 51 phenotypes 51 Late Cretaceous 51 microbiota