Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Phyllocoma scalariformis
filocoma escalera, Staircase phyllocoma
Length: 50 mm.
Shallow water (less than 200 m depth), intertidal and subtidal.
Domain
Eukaryota
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Superfamily
Muricoidea
Family
Muricidae
Genus
Phyllocoma
Species
scalariformis
Taxon category: Accepted
Syn.: Phyllocoma (Phyllocoma) scalariformis (Broderip, 1833), Triton scalariformis Broderip, 1833 (Horton et al., 2021) Note: AMNH: 163261, 163361, CDRS: 780. Syn.: Triton scalariformis Broderip, 1833 (basionym), fide Appeeltans et al. (2010)
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: Mexico (Guaymas) to Colombia and Ecuador (Galapagos Islands)
- Appeltans, W. Bouchet, P., Boxshall, G.A., Fauchald, K., Gordon, D.P., Hoeksema, B.W., Poore, G.C.B., van Soest, R.W.M., Stöhr, S., Walter, T.C., Costello, M.J. (eds.) (2010) World Register of Marine Species (WoRMS). Available online at http://www.marinespecies.org.
- 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.
- Kay, E.A. (1991) The Marine Mollusks of the Galapagos. Determinants of insular marine Faunas. In: James, M.J. (ed.): Galápagos Marine Invertebrate. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press. New York and London, p. 235-252.
- 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, Phyllocoma scalariformis", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=8129. Accessed 4 June 2026.