Actinella crassiuscula (Cockerell, 1922)
Taxonomy & Nomenclature
Synonym/s: Ochthephila (Callina) crassiuscula Cockerell, 1922
Conservation Status
Extinct (Fernández-Palacios et al., 2025; MolluscaBase eds., 2025)
Distribution & Habitat
Porto Santo, Madeiran Archipelago, Macaronesia
Anatomy & Morphology
Biology & Ecology
Hypodigm
Media
References
Original scientific description:
Cockerell, T. D. A. (1922). The helicoid group Callina Lowe. Description of a new species. Journal of Conchology 16(10): 310-311.
Other references:
Borges, P. A. V. et al. (eds.). (2008). Listagem dos fungos, flora e fauna terrestres dos arquipélagos da Madeira e Selvagens. Governo da Madeira, Funchal.
Cameron, Robert A. D., Cook, Laurence, M., Goodfriend, Glenn A. and Seddon, Mary B. (2006). Fossil land snail faunas of Porto Santo, Madeiran Archipelago: change and stasis in Pleistocene to recent times. Malacologia 49(1): 25-59. http://dx.doi.org/10.4002/1543-8120-49.1.25
Fernández-Palacios, José María, Fructuoso, Melania, Illera, Juan Carlos, Rando, Juan Carlos, de Nascimento, Lea, Fernández-Palacios, Enrique, Patiño, Jairo, Otto, Rüdiger, Castilla-Beltrán, Álvaro, González, Esther Martín, Orihuela-Rivero, Raúl, Alcover, Josep Antoni, Whittaker, Robert J. (2025). A synthesis of terrestrial species extinctions in the Macaronesian Islands and their correspondence with human occupancy. PNAS Nexus 4(8): pgaf215. https://doi.org/10.1093/pnasnexus/pgaf215 [Supplementary data (.docx)]
MolluscaBase eds. (2025). MolluscaBase. Actinella crassiuscula (T. D. A. Cockerell, 1922) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1447076 on 2025-09-12
Seddon, M. B. (2008). The landsnails of Madeira. The illustrated compendium of the landsnails and slugs of the Madeiran archipelago. Biotir Reports [Studies in biodiversity and systematics of terrestrial organisms], 2: i-viii, 1-196. Cardiff.