| Here is a decorative ammonite concretion from Yorkshire with a ammonite of the species Eleganticeras elegantulum. The pyrite yielding concretion was polished from the outside. The concretion itself measures about 78 mm in diameter. | |||
| Location: | Kettleness,  Yorkshire, UK | ||
| Size Ammonite : | about 22 mm | ||
| Age: | Jurassic, lower Lias, tenuicostatum Zone (About 190 Ma) | ||