#acteonela
- Acteonella — Romanian term (derived from the fossil genus Acteonella) for a type of prehistoric marine gastropod snails, characteristic of the Cretaceous period. Its structural shell is thick, oval or fusiform in shape, smooth, and provided with distinct columellar plications. Acteonella fossils are frequently used in geology as index fossils for dating sedimentary strata and reconstructing ancient equatorial marine environments.