A stunning example of a calcite ammonite fossil of the species Asteroceras obtusum from the world-famous Jurassic Coast beach of Lyme Regis, Dorset UK.
The main piece of limestone matrix measures 180 mm (7.1 inches) across and the fossil ammonite measures 76 mm (3 inches) across, which is a good size for this species. The ammonite is well preserved and has been prepared out of the rock to reveal the whole shell. This is what is known as a "popped" ammonite, meaning that when the rock split, both the positive shell and cast in the matrix were revealed. The ribs are very finely defined, and the colour is truly beautiful: a mix of different browns, creams, and greys with amazing detail in the crystalline suture lines. A great example of the species and impressive in the flesh. The two pieces of rock weigh 1600 grams together and both have cut flat bases to allow them to stand freely for display. Alternatively, this one can be displayed with the rocks back together with a surprise inside. These are very sought after ammonites from this world-famous location and colourful brown examples are very sought after.
Around 196 million years old (Sinemurian, Early Jurassic), this fossil would make a wonderful addition to any collection.