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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
4 inches) across with matrix which is large for this type of fossil
which sank to the seafloor and was preserved in the soft mud
The ammonites are very well preserved with great detail and the whole piece has a wonderful pyritic colour and shine
Huge uncommon crinoid (265 mm) colony <em>Pentacrinites</em> pyrite These are very popular ammonitesA 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
