A stunning example of an ammonite fossil of the species Promicroceras planicosta from the world-famous Jurassic Coast beach of Lyme Regis, Dorset UK.
The piece of limestone matrix measures 51 mm (2 inches) wide and the fossil ammonite measures 16 mm (0.62 inches) across. The ammonite is well preserved and has been prepared out of the rock to reveal the whole shell. The ribs are very finely defined, and the colour is beautiful: a pale yellow and grey. Part of the outer whorl was damaged when the rock was split open. A great example of the species and impressive in the flesh. The fossil weighs 10 grams and has a cut flat base to allow it to stand freely on its own for display.
Around 196 million years old (Sinemurian, Early Jurassic), this fossil would make a wonderful addition to any collection.