Relationship of the Shoreline to the Ocean in the Devonian
Devonian Seas

Devonian Shelf Margin

Devonian Shoreline

During the Devonian Period, the western North American shoreline was further east than presently; meaning all of Nevada was underwater along the continental shelf. The shelf margin during this time was considered to be a passive margin, meaning the margin was far away from the edge of the tectonic plate. Often times, this distance means the setting is relatively quiet tectonically. The calm and warm environment along this shoreline was home to a diverse suite of marine organisms, such as sponges, brachiopods, corals, and gastropods.