"Popped" Asteroceras obtusum ammonite fossil (68 mm) pyrite The piece of limestone matrix

The piece of limestone matrix measures 146 mm (5

A stunning example of a highly pyritised ammonite fossil of the species Crucilobiceras densinodulum from the world-famous Jurassic Coast beach of Charmouth

These large Crucilobiceras ammonites are uncommon as most are much smaller and they don't get much bigger of better than this

both the positive shell and cast in the matrix were revealed

The bone is very well preserved and has been prepared using air abrasive techniques to remove all matrix

"Popped" Asteroceras obtusum ammonite fossil (68 mm) pyrite The piece of limestone matrixA stunning example of a calcite ammonite fossil of the species Asteroceras obtusum from the world famous Jurassic Coast beach of Lyme Regis, Dorset UK. The ammonite sits inside the original piece of limestone matrix in which it was found, that has been split open to reveal both the positive and negative parts of the shell. The main piece of matrix measures 165 mm (6. 5 inches) across and the fossil ammonite measures 68 mm (2. 72 inches) across. The