Happy National Fossil Day!
Happy National Fossil Day! Here’s a recent fossil sent in by Rockwatcher, Ronnie for identification which is likely to be a part of a bivalve shell, Trigonia costata, named by chemist and palaeontologist James Parkinson whose name lives on in Parkinson’s disease. It is a species that appeared first in the Toarcian Stage (end of the Early Jurassic), but persisted into the Middle Jurassic – which is probably the age of...