HRS 4096 Carboniferous, Trace fossils, Weir, June 2008
Trace fossil in sandstone Heald Town Quarries, Weir, Bacup. There are numerous pits probably caused by burrowing molluscs and other animals. The animal that caused larger furrows in the soft sand 350 million years is unknown but clearly was capable of moving along on its own. BGS: Dyneley Knoll Flags - Sandstone. Sedimentary Bedrock formed approximately 312 to 313 million years ago in the Carboniferous Period. Local environment previously dominated by swamps, estuaries and deltas. Setting: swamps, estuaries and deltas. These rocks were formed in marginal coastal plains with lakes and swamps periodically inundated by the sea; or estuaries and deltas, and shallow seas.