A stunning example of a highly pyritised multi-ammonite fossil of the species Crucilobiceras densinodulum from the world-famous Jurassic Coast beach of Charmouth, Dorset UK .
The fossil measures 21 mm (0.85 inch) across. There are 5 ammonites within the matrix, which is a lot for this type of fossil at this size. The ammonites are very well preserved and have a wonderful golden colour and shine. These beautiful fossils are getting much harder to find these days. Due to a lack of erosion in the correct rock layers, they are becoming uncommon.
These multi-ammonite assemblages (or 'death beds') occur when lots of shells came together on the seafloor before being fossilised together, often collecting around an obstacle in the mud like a piece of wood or larger shell. They are a beautiful snapshot of life (and death) on the seafloor almost 200 million years ago.
Around 196 million years old, this fossil would make a wonderful addition to any collection.