A stunning and giant example of a highly pyritised ammonite fossil of the species Eoderoceras (Eteoderoceras) armatum from the world-famous Jurassic Coast beach of Charmouth, Dorset UK.
The fossil measures 118 mm (4.65 inches) across with matrix which is very large for this species and about as big as it gets in this condition. The ammonite is beautifully preserved in a pyrite matrix that is composed of the crushed outer whorl of the shell. The central whorls are well exposed and perfectly preserved on both sides of the matrix, which is rare for this species. The ribs are very finely defined and the colour is beautiful. Examples of this quality are rare these days. These ammonites are becoming harder to find these days. This one is a real beauty and one of the best we've had to offer. A heavy fossil, weighing in at 500 grams.
Around 196 million years old, this fossil would make a wonderful addition to any collection