Carboniferous

The Earth in the Carboniferous period
Meganeura (dragonfly)

Britain lay near the equator. Limestones containing corals, brachiopods and trilobites were deposited in shallow seas in the early Carboniferous. Later, sandstones, mudstones and coals were deposited in coastal swamps dominated by forests of giant ferns and horsetails.

Carboniferous

*Based on The Geologic Time Scale 2012 by F M Gradstein, J G Ogg, M Schmitz and G Ogg (2012), with additions.