Galapagos Species Database
The Galapagos Species Database shares the information about the species from our Natural History Collections.
Penethais triangularis
Murícido triangular, Triangular rocksnail
Domain
Eukaryota
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Superfamily
Muricoidea
Family
Muricidae
Genus
Penethais
Species
triangularis
Taxon category: Accepted
Syn.: Acanthais triangularis (Blainville, 1832); Syn.: Acanthais triangularis (Blainville, 1832); Purpura carolensis Reeve, 1846; Purpura triangularis Blainville, 1832; Thais (Thais) triangularis (Blainville, 1832) (Ahyong et al., 2024)
Origin: Native
Map of specimen collection localities or observation records for this species in our collections database.
Distribution: (M. triangularis, Thais triangularis, Acanthais triangularis) Lower California, through the Gulf, south to Peru and the Galapagos (Hickman & Finet, 1999; Keen, 1971).
- Ahyong, S Et. al. (2025) World Register of Marine Species. Available from https://www.marinespecies.org at VLIZ. doi:10.14284/170
- Finet, Y. (1994) The Marine Mollusks of the Galápagos Islands: a documented faunal list Muséum d'Histoire naturelle, Genève, 180 pp.
- Hickman, C.P. Jr. Finet, Y. (1999) A Field Guide to the Marine Molluscs of Galápagos. Sugar Spring Press, Lexington, Virginia, 150 pp.
- 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, Penethais triangularis", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=25612. Accessed 4 June 2026.