Micraster coranguinum Fossil Echinoid in Flint – Cretaceous Sea Urchin – Small Dole, Sussex, UK – Genuine with Certificate

Description This listing features a beautifully preserved Micraster coranguinum fossil echinoid, found encased in flint from the Gravel Beds of Small Dole, Sussex, United Kingdom. The specimen is displayed with a 1cm scale cube for accurate size reference. Please see the photo for the exact specimen you will receive. Micraster coranguinum is a classic and well-known species of fossil echinoid (sea urchin) from the Late Cretaceous period. It is distinguished by its distinct heart-shaped profile and fine ambulacral grooves. This particular specimen is preserved within flint, a hard, silica-rich sediment formed in marine chalk deposits. Geological & Palaeontological Information: Species: Micraster coranguinum Type: Fossil Echinoid (Sea Urchin) Geological Age: Late Cretaceous (Santonian–Campanian) Location: Small Dole, Sussex, UK Formation: Gravel Beds (derived from Chalk Formation) Preservation: In flint nodule Family: Spatangidae Order: Spatangoida Class: Echinoidea Morphology Features: Heart-shaped test, sunken petaloid ambulacra, symmetrical form, flattened base Depositional Environment: Shallow marine chalk sea; flint formed by post-depositional silica replacement of carbonate sediments Notable: Iconic British fossil used as a biostratigraphic marker in the Upper Chalk Biozone: Micraster coranguinum Zone (Late Cretaceous) Formally Described By: Jean-Baptiste de Lamarck (1816) Why Buy From Us? All fossils are 100% genuine specimens Accompanied by a Certificate of Authenticity What you see is what you get – you receive the exact fossil shown Expertly sourced and professionally handled This Micraster echinoid offers a beautiful and historically significant piece from Britain’s fossil-rich chalk deposits. It’s ideal for collectors, educators, or as a natural history display piece.