The distinctive bullet-like shell of these nautiloids was once divided into gas-filled chambers, which kept the creatures buoyant in the water. They are now fossilised in black limestone and often found in clusters, washed together by the ancient sea currents.
Age: approx. 400 million years
Any information provided by crystalboutique.co.uk is not intended to replace conventional medical treatment, advice or diagnosis. You should continue with any medical treatment prescribed for you by your health care professional.