Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Cypraecassis coarctata (G. B. Sowerby I, 1825)

yelmo boca ancha

Length: 70 mm

Shallow water (less than 200 m depth), subtidal

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Mollusca

Class
Gastropoda

Order
Littorinimorpha

Superfamily
Tonnoidea

Family
Cassidae

Genus
Cypraecassis

Species
coarctata

Taxon category: Accepted

Syn.: Cassis coarctata G. B. Sowerby I, 1825 · unaccepted (original combination), Cypraecassis (Levenia) coarctata (G. B. Sowerby I, 1825) (Horton et al., 2021). AMNH: 14379, 88656, ANSP: 42619, 225772, CAS: severa specimens, MHNG: 12097, 12098, 12099, CDRS: 289, 394, 907

Status

IUCN Red List Category: Not evaluated

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Gulf of California to Perú and Ecuador (Galapagos Islands)

References

  • Finet, Y. (1991) The Marine Mollusks of the Galapagos Islands. In: Galápagos Marine Invertebrate. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press. New York and London, p. 253-280.
  • Finet, Y. (2001) The marine mollusks of the Galapagos Islands: a documented faunal list. Editions du Muséum d' Histoire naturelle, Genève, 237 pp.
  • Hickman, C.P. Jr. Finet, Y. (1999) A Field Guide to the Marine Molluscs of Galápagos. Sugar Spring Press, Lexington, Virginia, 150 pp.
  • Horton, T. Horton, T., Kroh, A., Ahyong, S., Bailly, N., Boyko, C. B., Brandão, S. N., Gofas, S., Hooper, J. N. A., Hernandez, F., Holovachov, O., Mees, J., Molodtsova, T. N., Paulay, G., Decock, W., Dekeyzer, S., Poffyn, G., Vandepitte, L., Vanhoorne, B., Adlard, R., ... Zhao, Z. (2021) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ.
  • Keen, A.M. (1958) Sea Shells of Tropical West America. Stanford University Press, Palo Alto, 1st edition, 624 pp.

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Cypraecassis coarctata", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=8680. Accessed 30 October 2026.