Related by context. Frequent words. (Click for all words.) 66 theropod 62 Indohyus 61 tyrannosaur 60 carnivorous dinosaurs 59 Tiktaalik 59 marine invertebrates 59 trilobites 59 feathered dinosaurs 58 tetrapod 58 mouthparts 58 vertebrate 58 mandibles 58 morphologically 58 phyla 58 Archaeopteryx 58 tetrapods 57 theropods 57 sauropods 56 hadrosaur 56 Velociraptor 56 LB1 56 velociraptor 56 Neandertal 56 morphology 55 canine teeth 55 crocodilians 55 subfamily 55 foraminifera 55 sticklebacks 55 forelimbs 55 pectoral fins 55 protozoan 54 tyrannosaurs 54 melanosomes 54 diatoms 54 molluscs 54 T. rex 54 narwhal 54 forelimb 54 otoliths 54 Tyrannosaurus 54 baleen whales 54 morphologies 54 Ardipithecus 54 Triceratops 54 Longrich 54 mammals 53 arthropod 53 vertebrates 53 H. erectus 53 plesiosaur 53 marine reptiles 53 stromatolites 53 dinos 53 fossa 53 mammalian 53 diatom 53 fossils 53 pterosaur 53 stegosaurus 53 sea squirt 53 taxa 53 globular 52 protein fragment 52 vertebrate species 52 triceratops 52 flagellum 52 arthropods 52 mitochondrial genome 52 coelacanth 52 gobies 52 sea urchins 52 lizard 52 amino acid sequences 52 mandible 52 sauropod 52 prokaryotes 52 moa 52 herbivorous 52 Stegosaurus 52 limpets 52 Caenorhabditis elegans 52 anthropoids 52 alga 52 narwhals 52 tyrannosaurus rex 52 flatfish 52 termite mounds 52 primate species 52 morphological 51 squids 51 Australopithecus 51 phylogeny 51 hydrothermal vent 51 coprolites 51 cephalopods 51 planktonic 51 T rex 51 hominin 51 wooly mammoth 51 clades