The Story of Evolution

advance Africa America Ammonites Amphibia ancestor Angiosperms animals and plants apes appearance Archæan Asia astronomers atmosphere atoms beginning bird body brain branch Cambrian Carboniferous carnivores changes chapter civilisation climate close Coal-forest cold colours continent cosmic dust Cretaceous crust Crustacea culture cycads Deinosaurs Devonian earlier early earth enormous Eocene Europe evolution evolved fact feet ferns fish geological record geologists globe gradually higher types hundred Ice-Age ice-sheet insects jaws Jurassic land later limbs living things lower Magdalenian mammals mass Mesozoic miles million Miocene modern Molluscs nature Neanderthal nebula Neolithic North ocean Oligocene organisms period Permian Pleistocene population primitive probably Pterosaurs race recent region remains reptiles rise rocks round seems shell Silurian skull species spread stage stars Stone story suggest surface teeth temperature Tertiary Tertiary Era theory thousands to-day trace trees Triassic Trilobites upheaval vast vegetation