Related by context. Frequent words. (Click for all words.) 55 braincase 55 preserved fossils 54 Paranthropus 54 fossilized skull 52 ichthyosaur 51 plesiosaurs 51 dinosaur species 51 Torosaurus 51 tetrapod 51 Fossilized 50 Indohyus 50 homo erectus 50 kipunji 49 snail shells 49 carnivorous dinosaur 49 microfossils 49 T.rex 49 Olduvai Gorge 48 trilobite 48 palaeontologists 48 Smilodon 48 hieroglyphs 48 elemental composition 48 Palaeontology 48 theropod 48 Jurassic era 48 ammonites 48 Ediacaran 48 hydrothermal vent 48 fossilized skeleton 48 Egyptian hieroglyphics 48 Ötzi 48 Xenopus 48 maxilla 48 hominid species 48 Alemseged 48 Ardipithecus ramidus 47 Scientists theorize 47 Albertosaurus 47 peccary 47 Otzi 47 morphologically 47 exquisitely carved 47 mammoth tusk 47 Chicxulub crater 47 fossa 47 feathered dinosaurs 47 baleen whale 47 Raptorex 47 Early Cretaceous 47 Australian aborigines 46 cichlid 46 ALH# 46 afarensis 46 undersea volcanoes 46 tortoise shells 46 lithic 46 fossilized remains 46 Chlamydomonas 46 mosasaurs 46 horned dinosaurs 46 Darwinius 46 medullary bone 46 hadrosaur 46 wormlike 46 flatworm 46 cone snails 46 Tyrannosaur 46 lava tubes 46 finely carved 46 excavated 46 Vertebrate 46 Elamite 45 convergent evolution 45 concretions 45 erosional 45 morphology 45 erectus 45 saber toothed tigers 45 fossil specimens 45 Sociobiology 45 Paleoanthropology 45 horned dinosaur 45 Diplodocus 45 australopithecines 45 mosasaur 45 A. afarensis 45 Excavated 45 coprolites 45 Discovered 45 marine invertebrates 45 unicellular 44 resorbed 44 apelike 44 sauropod 44 Tiktaalik 44 sapiens 44 diffraction patterns 44 Dendrimers 44 Australopithecus afarensis 44 flatworms