Iridescent Caloceras display ammonite with encrusting bivalves 25 3 inches) tall and the

3 inches) tall and the fossil ammonite measures 20 mm (0

1 inches) across with matrix

which measures 82 mm (3

Crinoid heads of this quality are rare

This one is unusual as it also has several bivalve shells and serpulid worm tubes/casts that encrusted the ammonite after it died and lay resting on the Jurassic seafloor

Iridescent Caloceras display ammonite with encrusting bivalves 25 3 inches) tall and theA stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 87 mm (3. 45 inches) tall and contains a large partial ammonite shell that measures 70 mm across. The shell 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. The ammonite shell is very well preserved and has been prepared