Iridescent Psiloceras ammonite fossil display piece crinoid 85 inches) across and contains

85 inches) across and contains a single ammonite that measures 28 mm (1

so it is the true size of the shell

The piece of limestone matrix measures 155 mm (6

There are flashes of copper in the shell

Iridescent Psiloceras ammonite fossil display piece crinoid 85 inches) across and containsA stunning example of an iridescent ammonite fossil of the species Psiloceras planorbis from North Somerset, UK. The piece of limestone matrix measures 180 mm (7. 1 inches) across and contains a single ammonite, which measures 40 mm. The ammonite is well preserved and has been prepared out of the rock to reveal the shell, which displays some subtle iridescent colours that change depending on the angle that the fossil is viewed at with a nice sheen.