The Nautilus, a cousin of the ammonite however, survived and is frequently found in the warmer oceans of the world today. It was at the end of the Cretaceous that ammonites, along with dinosaurs and many other species finally became extinct. : ammonite fossil 1-16 of 504 results for 'ammonite fossil' RESULTS Price and other details may vary based on product size and color. At the end of the Triassic era, only one species of ammonite survived.Īmazingly, from this one species, they began to thrive again and became widespread during the Jurassic and Cretaceous. Ammonites lived during the time of the dinosaurs and were related to squid and octopuses. They are easily recognizable because of their coiled, shell-like shape. It is one of the worst extinction events the world has ever experienced. Ammonite fossils are among the most popular fossils in the world. At the end of the Permian, some 96% of all marine life, and 70% of terrestrial life became extinct. It is thought that the Permian extinction, 252 Million years ago, may have given the newly formed ammonite species a helping hand in becoming so prolific.

Ammonoids and their relatives in general, go all the way back to the Devonian, so by the time the Triassic came around, there was many well evolved species of Ammonite in existence. They descended from straight shelled Cephalopods, Orthoceras being a well known species characterised by its long straight chambered body.

Usually marine animals with a straight or curled shell, this fossil contained coiled marine animals. According to the fossil record, ammonites come in a wide variety of sizes and shapes, ranging from one inch to nine feet wide.

Ammonites from the Jurassic coast are typically 200 Million years old.Īmmonites first appeared around 240 Million years ago during the Triassic period. Ammonites are perhaps the most famous fossils as they possess the classic ribbed spiral nautilus shell. FabricJurassic discovery - Fossils and ammonites - paleontology studies and natural history design dinosaurs elephants shells under water creatures kids. Perfect for gifts and interior design projects. Jurassic Coast specialist ammonite fossils including Polished and Natural specimens from Lyme Regis & Charmouth (as well as other places) on the Southwest coast of England.