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 14 mm (0.55 inch) across. There are two ammonites that are well preserved on top of one another and have a wonderful golden colour and shine. There is also an unusual serpulid worm cast that would have attached to the ammonite shell almost 200 million years ago. 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.