Related by context. Frequent words. (Click for all words.) 59 fossil 58 fossils 57 Burgess Shale 55 dinosaur fossil 54 dinosaur fossils 53 trilobites 53 whale skeleton 53 stalactite 52 specimen 52 theropod 52 dinosaur bones 52 agates 52 petrified wood 51 flint tools 51 lava tubes 51 dinosaur footprints 51 arthropod 51 paleontological 51 tyrannosaurus rex 51 hadrosaur 50 fossilized remains 50 scarab 50 garnets 50 fossilized bones 50 dinosaur 50 fossilized 50 pterosaur 49 microfossils 49 feathered dinosaurs 49 calcareous 49 middens 49 basalt 49 shark tooth 49 coprolites 49 Neandertal 49 dinosaur skeleton 49 termite mounds 49 specimens 49 hydrothermal vent 49 palaeontology 49 wooly mammoth 48 opal 48 plesiosaur 48 opals 48 Silurian 48 triceratops 48 prehistoric 48 sauropod 48 tyrannosaur 48 chert 48 T rex 48 whalebone 48 Carboniferous 48 scanning electron microscope 48 red ocher 48 mollusc 48 Brachiosaurus 48 meteorite 47 inukshuk 47 artefact 47 Otzi 47 dinosaur eggs 47 marine reptiles 47 trackway 47 paleontology 47 artifact 47 marine invertebrates 47 Late Cretaceous 47 cycad 47 foraminifera 47 sandstone 47 stegosaurus 47 dinosaur skeletons 47 sauropods 47 dino 47 Mesolithic 47 Radiocarbon dating 46 T. rex 46 palaeontologist 46 petroglyph 46 tusk 46 olivine 46 planetary nebula 46 kauri 46 lunar soil 46 Indohyus 46 skink 46 Australopithecus 46 carnivorous dinosaurs 46 paleontologist 46 excavated 46 ancient artefacts 46 stromatolites 46 salt crystals 46 tetrapod 46 Tiktaalik 45 bivalve 45 Stegosaurus 45 calcite 45 elaborately carved 45 igneous