Devonian Period

Interval of the Paleozoic Era that follows the Silurian and precedes the Carboniferous. It is thought to have covered the span of time between about 408 and 360 million years ago (see Table). The Devonian is often divided into the Early Devonian Epoch (408 to 387 million years ago), Middle Devonian Epoch (387 to 374 million years ago), and Late Devonian Epoch (374 to 360 million years ago). The rocks that