Huge uncommon crinoid (265 mm) colony Pentacrinites pyrite It weighs 335 grams

It weighs 335 grams

These are very popular ammonites and large examples are uncommon these days

This one is unusual as it also has several bivalve shells and serpulid worm tubes/casts that encrusted the ammonite after it died and lay resting on the Jurassic seafloor

The ammonite was found in a piece of limestone that was split open to reveal the both the positive cast of the ammonite and the negative impression of the shell

There is a deep red shine to it with flashes of green and orange on the inner whorls

Huge uncommon crinoid (265 mm) colony <em>Pentacrinites</em> pyrite It weighs 335 gramsA stunning and rare example of a crinoid fossil of the species Pentacrinites fossilis from the world famous Jurassic Coast beach of Charmouth, Dorset UK. The fossil measures 265 mm (10. 45 inches) across, which is very large for a crinoid fossil from this location. The fossil consists of a colony of animals preserved together in a mass with good detail in the exposed stems, arms, and pinnules. These colonies lived in the Jurassic seas attached to