Multi Irridescent Psiloceras Planorbis Death Bed, Somerset Jurassic Coast, UK.

This limestone host rock contains two beautifully preserved Psiloceras planorbis ammonites, displaying vivid flashes of red, bronze, blue, and golden iridescence, making them one of the most visually striking British Jurassic ammonites.

The ammonites measure between 2 and 2.5cm in diameter, the shells retains crisp, well-defined whorls, with elegant spiral growth beautifully preserved across the matrix. The surrounding limestone slab is itself display-worthy, featuring a cut base for presentation and an additional third ammonite imprint on the back side (likely another Psiloceras planorbis) that adds character and interest to the piece.

 Psiloceras planorbis is the defining index ammonite of the base of the Jurassic Period, marking the dawn of this new era in Earth’s history.

Recovered from the Somerset Jurassic Coast, the specimen has been delicately prepared to reveal the stunning fossils beneath the stone, 100% nature with no repairs or restoration . 

A rare combination of vivid natural beauty and scientific significance, this ammonite death bed is ideal for display or study.

 Specimen Details

Species: Psiloceras planorbis

Diameter: 20mm, 25mm 

Matrix Size: Approx. 130 x 80 x 20 mm

Age/ Era: Lower Jurassic. ~ 199–203 million years old

Stratigraphy: Lower Lias, Hettangian

Age: Circa 199–203 million years

Locality: Beach find, Somerset, England

Formation: Somerset Jurassic Coast

Condition: Excellent, very well preserved, with natural red, bronze, green, and golden iridescence. No restoration; only professional preparation and conservation.