This time period took place 359 to 299 million years ago. 3 min read The Carboniferous period, part of the late Paleozoic era, takes its name from large underground coal deposits that date to it.

The fossil comes from the Carboniferous, a period in geological ... fossils had been preserved—this rarely happens because the sandstone composition in Northumberland doesn’t easily allow ...

Coarse layers of sedimentary rock interspersed with fossil-rich, oxidized-red wafers of sandstone shale form ... revealing secrets of the early Carboniferous in future studies.