Related by context. Frequent words. (Click for all words.) 56 feathered dinosaurs 55 tyrannosaur 55 mammal species 54 H. erectus 54 extinct 54 theropod 53 vertebrate species 53 hominin 53 Longrich 53 phyla 52 Homo floresiensis 52 coelacanth 52 Indohyus 52 Denisovans 52 species 52 theropods 52 avian species 52 biodiversity hotspot 52 frog species 51 taxon 51 Poinar 51 clades 51 Tasmanian tiger 51 hominid 51 trilobites 51 Columbian mammoth 51 toothed whales 50 subspecies 50 morphologically 50 plesiosaur 50 amphibian species 50 clouded leopard 50 coprolites 50 marine invertebrates 50 genus 50 genetically distinct 49 Tiktaalik 49 fossils 49 primate species 49 Homo habilis 49 extinct species 49 carnivorous dinosaurs 49 palaeontologists 49 LB1 49 mammalian species 49 middens 49 hadrosaur 49 genus Homo 48 thylacine 48 relict 48 foraminifera 48 Extinct 48 beaked whale 48 clouded leopards 48 vertebrate 48 Archaea 48 fossilized remains 48 Neandertals 48 tetrapods 47 taxa 47 orchid species 47 anthropoids 47 dinosaur fossils 47 platypuses 47 tetrapod 47 subfamily 47 hominins 47 prehistoric 47 vertebrates 47 sauropod 47 Irrawaddy dolphins 47 arthropod 47 marine reptiles 47 tyrannosaurs 47 civet 47 giant tortoise 46 Australopithecus 46 Ardipithecus 46 Otzi 46 skink 46 stickleback 46 fossilized 46 specimens 46 fossilized bones 46 kimberlitic 46 biodiversity hotspots 46 parasitic worm 46 stromatolites 46 microfossils 46 Javan rhinos 46 coral species 46 western lowland gorillas 46 lineages 46 Neandertal 46 Critically Endangered 46 flycatcher 46 Paleocene 46 mammal 46 avian influenza viruses 45 Archaeopteryx 45 genomic sequence