• Geological Age: Eocene period, Cuisian stage, 56 to 47 million years ago.
• Location: Soissons, Aisne, France
• Class: Gastropod
• Species: Potamides

Potamides are an extinct species of gastropod, these samples were found in Soissons, Aisne, France and are dated to the Cuisian stage of the Eocene period, 56 million years ago. Also known as sea snails, they are easily identifiable due to their long, spiraling shells, often called ‘unicorn shells’. They lived in marine environments and were found around the world.

Species Name: Purpura haemastoma

Family: Gastropod

Age: Pleistocene, 2.5 Ma to 12,000 years ago

Location: Agios Theologus, Kos, Greece

Species Name: Trigonostoma acutangula

Family: Gastropod

Age: Miocene, Burdigalian, 20 to 15 Mya.

Location: Leognan, France