A stunning example of an ammonite fossil of the species Psiloceras planorbis from North Somerset, UK.
The piece of limestone matrix measures 130 mm (5.15 inches) tall and contains three ammonites that are large for this genus. The ammonites are well preserved and have been prepared out of the rock to reveal the shells, which display some nice brown and silvery sheens. The fossil weighs 515 grams and has a cut-flat base to allow it to stand freely for display.
Around 200 million years old (Hettangian, Early Jurassic), this fossil would make a wonderful addition to any collection.