A stunning example of a calcite ammonite fossil of the species Asteroceras stellare from the world-famous Jurassic Coast beach of Lyme Regis, Dorset UK.
The ammonite measures 270 mm (10.6 inches) across, which is a very good size for this species. 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 it has a mix of colours and types of preservation, including crystalline calcite, limestone, and iridescent aragonite in patches. The shell is distorted and contorted in areas, which is the result of geological processes over millions of years that caused shrinkage in the shell structure at different rates inside the rock matrix. This feature adds to the uniqueness of this piece as no other ammonite will ever look the same as this one. A great example of an uncommon species and impressive in the flesh. The fossil weighs 4300 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, especially large display pieces like this example. This one would look great for a unique interior design project.
Around 196 million years old (Sinemurian, Early Jurassic), this fossil would make a wonderful addition to any collection.