Stunning big rainbow iridescent Caloceras display ammonite fossil (78mm) crinoid which displays some subtle iridescent

which displays some subtle iridescent colours that change depending on the angle that the fossil is viewed at with a nice sheen

which sank to the seafloor and was preserved in the soft mud

The fossil weighs 402 grams and has a cut flat base to allow it to stand freely for display

which displays some beautiful subtle iridescence with flashes of different colours appearing as the viewing angle changes

Stunning big rainbow iridescent Caloceras display ammonite fossil (78mm) crinoid which displays some subtle iridescentA stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 96 mm (3. 75 inches) across and contains an ammonite that measures 78 mm (3. 1 inches), which is large for this species. The ammonite sits in the original limestone matrix in which it was found that has been shaped and has a cut flat base allowing it to be displayed freely standing by itself. The ammonite is very well