A stunning example of an iridescent ammonite fossil of the species Psiloceras planorbis from North Somerset, UK.
The piece of limestone matrix measures 135 mm (5.3 inches) tall and the ammonite measures 75 mm, which is about as big as this species gets. The ammonite is perfectly preserved and has been prepared out of the rock to reveal the shell, which displays some nice iridescent colours that change depending on the angle that the fossil is viewed at, with some particularly stunning fiery red and orange hues visible at certain viewing angles. There are also some further smaller iridescent ammonite shells in the matrix. The fossil weighs 525 grams and has a cut flat base to allow it to stand freely for display. A very impressive display fossil.
Around 200 million years old (Hettangian, Early Jurassic), this fossil would make a wonderful addition to any collection.