Related by context. Frequent words. (Click for all words.) 62 thylacine 57 theropod 57 H. erectus 56 Poinar 56 megafauna 55 hadrosaur 55 Radiocarbon dating 55 microfossils 54 Tasmanian tiger 54 tyrannosaur 54 coprolites 54 theropods 54 Cretaceous Period 53 Indohyus 53 dinosaurs 53 Archaeopteryx 53 skink 53 moa 53 tetrapod 53 Columbian mammoth 53 stromatolites 53 angiosperms 53 mammal 53 fossilization 53 temperate forests 52 radiocarbon dating 52 wooly mammoth 52 fossils 52 species 52 platypuses 52 feathered dinosaurs 51 sauropods 51 mammoths 51 hominins 51 carnivorous dinosaurs 51 pterosaur 51 Neandertals 51 Homo habilis 51 toothed whales 51 giant tortoise 50 bipedalism 50 fossil 50 trilobites 50 cassowary 50 cycad 50 crocodilians 50 sauropod 50 diatoms 50 Carboniferous 50 Australopithecus 50 Linnean Society 50 marine reptile 50 eucalypt 50 trackway 50 mammals 50 domesticated 49 radiocarbon 49 marine reptiles 49 palaeontologists 49 marsupials 49 genus Homo 49 taxa 49 Tiktaalik 49 lowland forests 49 echidna 49 tuatara 49 multicellular 48 extinct 48 interglacial period 48 arthropod 48 Burgess Shale 48 Beringia 48 biogeography 48 systematics 48 fossilized remains 48 prokaryotes 48 Late Cretaceous 48 terrestrial ecosystems 48 hominin 48 kauri 48 interbred 48 fossilized 48 triceratops 48 Longrich 48 eucalypts 48 Paleocene 48 woolly mammoth 48 Homo sapiens 48 Homo floresiensis 48 domestication 48 tyrannosaurs 48 Homo erectus 48 herbivore 48 plesiosaur 47 dinosaur 47 tyrannosaurus rex 47 Pleistocene era 47 Mesolithic 47 Cambrian explosion 47 tapirs 47 hominid