Calclamna is an extinct genus of sea cucumber which existed in Europe during the Triassic and Jurassic period. The type species is Calclamna germanica.
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0