Excavated from The Burren, Clare within the Magowna Formation. It is of Brigantian – Namurian age and comprises dark micritic limestone and black calcareous shale with phosphate; the macrofauna are rugose corals, goniatites and nautiloids. It looks like a trace fossil but I can’t figure out what it is. Roughly 7cm left to right of image. Anyone know what it could be? #fossil