A stunning and large 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 101 mm (4 inches) across which is huge for this species. It is beautifully preserved on both sides with part of the outer whorl missing, possibly due to predation when it was alive or on the seafloor before it was buried and fossilised. The suture lines are clearly visible and very striking and the detail in the ribs is very good. Some of the much sought after spines are also still present. It has a lovely pyritic golden colour and shine. These fossils are very hard to find these days due to a lack of erosion of the right layers in the cliffs on the Jurassic Coast.
Around 196 million years old, this fossil would make a wonderful addition to any collection