Geochronological Scale Part 4 77256988

Tags: table fish cell scale education science conifer history geology training reptile unit research evolution international microorganism era bacteria period rank jurassic cretaceous stegosaurus tyrannosaurus triceratops chronology Conferences mesozoic eon seminars triassic geochronology The Past the earth archeopteryx treelike fern geological time the prokaryotes chronostratigraphic armored fish first amphibian first bird first mammal palmlike plant first flowering plant first dinosaur