A stunning example of an iridescent ammonite fossil of the species Psiloceras sp. from North Somerset, UK.
The piece of limestone matrix measures 95 mm (3.7 inches) tall and contains one complete ammonite, which measures 58 mm (2.3 inches). The ammonite is very well preserved and has been prepared out of the rock to reveal the shell, which displays some stunning iridescent colours that change depending on the angle that the fossil is viewed at with a nice copper sheen. This one is unusual as it also has several bivalve shells that encrusted the ammonite after it died and lay resting on the Jurassic seafloor. The fossil weighs 160 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.