Calcite Promicroceras ammonite fossil display piece (26 mm) iridescent Crinoids are echinoderms closely related

Crinoids are echinoderms closely related to starfish and sea urchins

and pinnules

It is preserved in calcite and has been coated in a reversible (soluble) lacquer for protection

which displays some subtle iridescent colours that change depending on the angle that the fossil is viewed at with a nice sheen

Calcite Promicroceras ammonite fossil display piece (26 mm) iridescent Crinoids are echinoderms closely relatedA stunning example of an ammonite fossil of the species Promicroceras planicosta from the world famous Jurassic Coast beach of Lyme Regis, Dorset UK. The piece of limestone matrix measures 80 mm (3. 15 inches) tall and the fossil ammonite measures 26 mm (1 inch). The ammonite is well preserved and has been prepared out of the rock to reveal the shell. The ribs are finely defined, and the mix of yellow and brown colours is beautiful. A great example of