Large iridescent double-Psiloceras ammonite display fossil Marine reptile The ammonite sits in the

The ammonite sits in the original limestone matrix in which it was found that has been shaped and has a cut-flat base to allow it to be displayed freely standing in a sculptural form

It is slightly distorted and compressed on one side

3 inches) across and contains two ammonites

The reverse of the piece is covered in stem ossicles that show off the classic five-pointed star-shaped cross section that gives this genus its name

The shell displays some truly stunning multi-coloured iridescence with flashes of red

Large iridescent double-Psiloceras ammonite display fossil Marine reptile The ammonite sits in theA stunning example of an iridescent ammonite fossil of the species Psiloceras planorbis from North Somerset, UK. The piece of limestone matrix measures 140 mm (5. 45 inches) across and contains two complete ammonites, which measure 46 mm and 23 mm. The ammonites are very well preserved and have been prepared out of the rock to reveal the shells, which display some subtle iridescent colours that change depending on the angle that the fossil is viewed