The Evolution of the Earth and Its Inhabitants: A Series of Lectures Delivered Before the Yale Chapter of the Sigma XI During the Academic Year 1916-1917 |
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active animals appears Archeozoic areas aridity Asia atmosphere average body Cacops California carbon dioxide Cenozoic cent chemical chordate civilization climatic changes close complex continental continental platforms continents Cretaceous crust cynodonts deaths density developed Devonian diameter dinosaurs early earth earth-growth elements energy environment Eocene erosion evidence evolution existence extinction fact Figure forms fossil geologic geologists glacial granite greater habitat heat higher humidity hypothesis igneous rocks increase invertebrate known lands less limestones lithosphere living matter magma mammals marine mass material resources mental Mesozoic miles million Miocene molten moon nature nitrogen North America ocean basins orbits organisms origin outer Paleozoic period Permian planetesimal planetoids planets present primates probably proteins Proterozoic protoplasm rainfall record regions reptiles result RICHARD SWANN LULL rise rotation sauropod sedimentary sediments Silurian solar system spiral nebula stars surface temperature terrestrial theory thickness tidal forces tion Triassic tropical variability vertebrates zone