Calcite Promicroceras ammonite fossil display piece (20 mm) iridescent The piece of limestone matrix

The piece of limestone matrix measures 92 mm (3

Crinoids are echinoderms closely related to starfish and sea urchins

The piece of limestone matrix measures 122 mm (4

There is a predation bite in the outer whorl where a Jurassic predator bit into the ammonite and killed it

Calcite Promicroceras ammonite fossil display piece (20 mm) iridescent The piece of limestone matrixA 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 60 mm (2. 3 inches) tall and the fossil ammonite measures 20 mm (0. 8 inches). The ammonite is very well preserved and has been prepared out of the rock to reveal the shell. The ribs are finely defined, and the mixed yellow and grey colour is beautiful. There is a