Larger Ammonite Fossiled with Chambered ends from Madagascar

Larger Ammonite Fossiled  with Chambered ends  from Madagascar

Sold by weight. Approximate sizes

Ammonites are extinct invertebrates that shared the same fate as the dinosaurs, going extinct at the end of the Cretaceous Period, 65 million years ago.  Modern relatives of ammonites include the nautilus, squid, cuttlefish and octopus.  Because ammonites lived exclusively in marine environments, their presence also indicates the location of prehistoric seas