A stunning example of an ammonite fossil of the species Psiloceras planorbis from North Somerset, UK.
The piece of limestone matrix measures 150 mm (5.9 inches) across and contains lots of ammonites that washed together on the Jurassic seafloor. It is unusual to get assemblages of this species in one piece like this. The matrix is original and has been shaped for display. The ammonites are well preserved and have been prepared out of the rock to reveal the shells, which display some subtle iridescent colours with red and copper flashes appearing when the angle the fossil is viewed from changes.
The fossil weighs 285 grams. These ammonites make wonderful display items and are real conversation starters.
Around 200 million years old (Hettangian, Early Jurassic), this fossil would make a wonderful addition to any collection.