Sip back and discover Jamaica’s Late Cretaceous Guinea Corn Formation, home to fossilised rudist bivalves dating 72–66 million years ago. Explore reef-building clams, diverse morphotypes, and stratigraphic sections along the Rio Minho. Learn how rudists shaped tropical reefs, survived environmental change before the K-Pg extinction, and contributed to Jamaica’s geological heritage as one of the IUGS First 100 Geological Heritage Sites.