Juvenile red iridescent Psiloceras ammonite fossil (28mm) iridescent The two pieces of rock

The two pieces of rock combined weigh 4

The matrix measures 83 mm (3

and a nice light brown colour

so it is the true size of the shell

Juvenile red iridescent Psiloceras ammonite fossil (28mm) iridescent The two pieces of rockA stunning example of an iridescent ammonite fossil of the species Psiloceras planorbis from North Somerset, UK. The piece of limestone matrix measures 125 mm (4. 85 inches) across and contains a single ammonite that measures 28 mm (1. 1 inches), making this a small juvenile of the species. 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