Iridescent Psiloceras ammonite fossil (45mm) Marine reptile The fossil measures 67 mm

The fossil measures 67 mm (2

red and gold colours present

The piece of limestone matrix measures 130 mm (5

It weighs 235 grams

This species has a distinctive row of spines on the outer whorl

Iridescent Psiloceras ammonite fossil (45mm) Marine reptile The fossil measures 67 mmA stunning example of an iridescent ammonite fossil of the species Psiloceras planorbis from North Somerset, UK. The piece of limestone matrix measures 130 mm (5. 1 inches) across and contains a single ammonite that measures 45 mm (1. 8 inches). The ammonite is very well preserved and has been prepared out of the rock to reveal the shell, which displays some stunning iridescent colours that change depending on the angle that the fossil is viewed at