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 210 mm (8.25 inches) across and the fossil ammonite measures 30 mm (1.2 inches), which is very large for this species. The ammonite is very well preserved and has been prepared out of the rock to reveal the shell. The ribs are finely defined, and the mixed yellow and grey colour is beautiful.
A great example of the species and impressive in the flesh. The fossil weighs 630 grams and has a cut flat base to allow it to stand freely for display.
Around 196 million years old (Sinemurian, Early Jurassic), this fossil would make a wonderful addition to any collection.