A stunning example of an iridescent multi-ammonite fossil of the species Psiloceras planorbis from North Somerset, UK.
The matrix measures 148 mm (5.8 inches) across and contains three two ammonites, two of which measure 29 mm and one just 10 mm, making them small juveniles. It is unusual to find a piece with more than one ammonite of this species in. The shells sit in the original limestone matrix in which they were found that has been shaped and has a cut-flat base to allow it to be displayed freely standing.
The ammonites are very well preserved and have been prepared out of the rock to reveal the full shells, which display some beautiful subtle iridescence with colours that change as the viewing angle changes, with bronze and copper colours appearing against a pearlescent background. The whole piece weighs 490 grams.
These fossils are highly sought after and very hard to find. They are preserved in the same way as the famous Canadian "Ammolite" ammonites that are turned into valuable gemstones. These fossils make great unusual gifts and each one is totally unique.
Around 200 million years old (Hettangian, Early Jurassic), this fossil would make a wonderful addition to any collection.