the.com/triassic

Earth rebooting after its worst mass extinction, with dinosaurs as the beta test.

means The geologic period (about 252–201 million years ago) when life clawed its way back after the Permian extinction, setting the stage for dinosaurs to show up.

from Coined from 'trias,' Greek for 'triad,' because 19th-century German geologists noticed the rock layers from this period in Germany split neatly into three distinct bands — one sandstone, one limestone, one shale. The name describes the rock stack, not the life it entombed; the dinosaurs just happened to be moving in while the sediment was still settling.

timespan
252 to 201 million years ago
named for
three rock layers in Germany
first dinosaurs
small, two-legged, utterly unimpressive at first
ended by
another mass extinction, volcanic this time
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