A stunning example of an ammonite fossil of the species Psiloceras planorbis from North Somerset, UK.
The piece of limestone matrix measures 80 mm (4.2 inches) tall and contains two ammonites, the largest of which measures 62 mm, which is large for this genus, along with an unusual bivalve. The ammonites are well preserved and have been prepared out of the rock to reveal the shells, which display some nice pearlescent and silvery sheens with subtle flashes of red iridescence at certain viewing angles. The fossil weighs 390 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.