Cerion (gastropod)

Cerion is a genus of small to medium-sized tropical air-breathing land snails, terrestrialpulmonategastropods in the family Cerionidae, noted for its extreme morphological diversity. The genus is endemic to the Caribbean region.

Cerion has been a model organism in evolutionary biology. The genus has significantly contributed to scientific understanding of evolutionary processes in insular environments, making it a key subject in biogeographical and ecologicalresearch.