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Ammonites are perhaps the most widely known fossil, possessing the typically ribbed spiral-form shell as pictured above. These creatures lived in the seas between 240 - 65 million years ago, when they became extinct along with the dinosaurs.

Ammonites are perhaps the most widely known fossil, possessing the typically ribbed spiral-form shell as pictured above. These creatures lived in the seas between 240 - 65 million years ago, when they became extinct along with the dinosaurs.

Fossil Spiral by Amanda Moore - Fossil Spiral Digital Art - Fossil Spiral Fine Art Prints and Posters for Sale

Fossil Spiral

Fossil Spiral by Amanda Moore - Fossil Spiral Digital Art - Fossil Spiral Fine Art Prints and Posters for Sale

:^) Ammonite / This ammonite is on display in our Elements gallery. Herbert Art Gallery & Museum, Coventry, West Midlands, UK

:^) Ammonite / This ammonite is on display in our Elements gallery. Herbert Art Gallery & Museum, Coventry, West Midlands, UK

Ammonites at the Smithsonian. Originating from within the bactritoid nautiloids, the ammonoid cephalopods first appeared in the Devonian (circa 400 million years ago) and became extinct at the close of the Cretaceous (65.5 Ma) along with the dinosaurs.

Ammonites at the Smithsonian. Originating from within the bactritoid nautiloids, the ammonoid cephalopods first appeared in the Devonian (circa 400 million years ago) and became extinct at the close of the Cretaceous (65.5 Ma) along with the dinosaurs.

478 5ct  Iridescent Ammonite Ammolite Facet Rough Specimen Fossil

478 5ct Iridescent Ammonite Ammolite Facet Rough Specimen Fossil

Ammonites were free-swimming molluscs that occupied the ancient oceans. They existed between about 400 million years ago and 65 million years ago

Ammonite diet revealed in X-rays

Ammonites were free-swimming molluscs that occupied the ancient oceans. They existed between about 400 million years ago and 65 million years ago

6pcs-ammonite-fossil-spiral-sea-shell-Tibetan-Silver-Bead-charms-Pendants-3

6pcs ammonite fossil spiral sea shell Tibetan Silver Bead charms Pendants @3

6pcs-ammonite-fossil-spiral-sea-shell-Tibetan-Silver-Bead-charms-Pendants-3

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