Related by context. Frequent words. (Click for all words.) 60 Vertebrate 59 Morphology 58 phylogenetic tree 58 elegans 58 trilobite 57 Palaeontology 57 Xenopus 57 hadrosaur 57 taxon 57 specimens 57 braincase 56 Fig. 1A 56 subfamily 56 canadensis 56 Supplementary Fig 56 theropod 56 Archaeopteryx 56 fossil specimens 55 LB1 55 specimen 55 Neandertal 55 caudal 55 morphologically 54 homolog 54 fig. 54 fossa 54 Fossilized 54 faunal 54 phylogenetic 54 Early Cretaceous 54 Atapuerca 54 systematics 54 taxa 54 Ardipithecus ramidus 53 Raptorex 53 karyotype 53 Chlamydomonas 53 phylogenetic analysis 53 lamellar 53 gene encodes 53 Herbarium 53 immunohistochemical 53 hominid fossils 53 morphologic 53 histopathologic 53 morphological 53 Linnean Society 53 snail shells 53 Ötzi 53 amino acid sequences 53 phylogeny 53 Hippocampus 52 theropod dinosaurs 52 Specimens 52 relict 52 #:#-# [033] 52 diffraction pattern 52 crystallographic 52 swallowtail 52 nucleotide sequence 52 A. afarensis 52 fundus 52 Columbian mammoth 52 maxillary 52 Diplodocus 52 mosasaur 52 clades 52 Radiographs 52 fossils 52 vulgaris 52 c. #-# [002] 52 feathered dinosaurs 52 fluorescently labeled 52 hypoplasia 52 faience 52 haplogroup 52 morphology 52 staghorn 51 scanning electron microscope 51 morphologies 51 histopathological 51 prokaryotic 51 arthropod 51 Anopheles gambiae 51 Radiocarbon dating 51 homologue 51 x ray diffraction 51 histological 51 T.rex 51 membranous 51 morphogenesis 51 clade 51 evolutionarily conserved 51 ammonites 51 placental mammals 51 tetrapod 51 diatom 51 photograms 51 autosomal 51 dinosaur species 51 microfossils