Large multi-coloured iridescent Caloceras display ammonite calcite which is a good size

which is a good size for this species

and red tones dominate the shell colour giving it some of the nicest colours possible in these fossils

The piece of limestone matrix measures 85 mm (3

which measures 82 mm (3

1 inches) across with matrix

Large multi-coloured iridescent Caloceras display ammonite calcite which is a good sizeA stunning and perfect example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 178 mm (7 inches) wide and contains a large partial ammonite shell that measures 95 mm and sits in the original limestone matrix in which it was found. This is large for this species. The ammonite is very well preserved and has been prepared out of the rock to reveal the shell, which displays some beautiful