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 piece of limestone matrix measures 127 mm (5 inches) wide and the fossil ammonite measures 51 mm (2 inches) across. The ammonite is very well preserved and has been prepared out of the rock to reveal the whole shell. The body chamber opened up when the rock was split revealing the beautiful internal crystalline calcite structure. The ammonite can also be removed from the main block of limestone to be displayed by itself if desired. The ribs are very finely defined, and the colour is beautiful: a mottled mix of yellows and browns. A great example of the species and impressive in the flesh. The fossil weighs 285 grams and has a cut flat base to allow it to stand freely on its own for display. These are very sought after ammonites from this world-famous location.
Around 196 million years old (Sinemurian, Early Jurassic), this fossil would make a wonderful addition to any collection.