Megasurcula carpenteriana

Megasurcula carpenteriana
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Pseudomelatomidae
Genus:	Megasurcula
Species:	M. carpenteriana
Binomial name
Megasurcula carpenteriana (Gabb, 1865) [1]
Synonyms [2]
Bathytoma tremperiana(Dall, 1911) Conus carpenterianus(Gabb, 1865) Conus tremperianus(Dall, 1911) Cryptoconus carpenterianusGabb, 1865 Cryptoconus tremperianus(Dall, 1911) Megasurcula grantiBartsch, 1944 Pleurotoma (Surcula) carpenterianaGabb, 1865 (original combination)

Megasurcula carpenteriana (Gabb, 1865), also known as Carpenter's turrid, ^[3] is a species of medium-sized predatory sea snail, a marine gastropod mollusc in the family Pseudomelatomidae, a family previously lumped with others collectively known as turrids. ^[4] This species occurs in the Eastern Pacific Ocean. The species was named in honor of Philip Pearsall Carpenter. ^{[5] [2]}

Subspecies

Subspecies within this species include:

• Megasurcula carpenteriana fernandoana ^[6]

Description

The shell is small, in the adult stage averaging about 62 mm (2.4 in) in length, against 90 to 110 mm (3.5 to 4.3 in) in length for the fully adult carpenteriana. It is proportionately much heavier, the anal fasciole is more strongly constricted, and the appressed margin of the whorl does not approach as closely to the periphery of the preceding whorl as in that species. The periphery is often marked by a minutely beaded or undulate thread, and is more nearly midway between the sutures on the spire than in carpenteriana. The aperture is shorter than the spire in nearly every case, while the reverse is true of carpenteriana.

(description of Bathytoma tremperiana compared with Bathytoma carpentaria) ^[7]

Distribution

This marine species occurs from California, United States to Central Baja California, Mexico

References

1. "species Megasurcula carpenteriana (Gabb, 1865)". BioLib.cz: Biological library.
2. Auffenberg, Kurt (2021). Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O (eds.). "Megasurcula carpenteriana (Gabb, 1865)". MolluscaBase. World Register of Marine Species . Retrieved 28 September 2024.
3. "Live from Western America (Page Three)".
4. Bouchet P.; Rocroi J.-P., eds. (2005). "Classification and nomenclator of gastropod families". Malacologia: International Journal of Malacology. 47 (1–2). Hackenheim, Germany: ConchBooks. ISBN   3-925919-72-4. ISSN   0076-2997.
5. Gabb, W.M. (1865). "Description of new species of marine shells from the coast of California". Proceedings of the California Academy of Sciences. 3 (3): 182–190.
6. "Megasurcula carpenteriana". Arctos.
7. W.H. Dall (February 1911). "Notes on California shells II". The Nautilus. 24 (10): 109–112.

Megasurcula carpenteriana, holotype of the synonym Megasurcula granti at the Smithsonian Institution

• Filmer R.M. (2001). A Catalogue of Nomenclature and Taxonomy in the Living Conidae 1758 – 1998. Backhuys Publishers, Leiden. 388pp.

External links

• Gastropods.com: Megasurcula carpenteriana
• Tucker, J.K. (2004). "Catalog of recent and fossil turrids (Mollusca: Gastropoda)" (PDF). Zootaxa. 682: 1–1295. doi:10.11646/zootaxa.682.1.1.