''Gaza rathbuni'', common name Rathbun's gaza, is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
sea snail, a
marine gastropod mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...
in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Margaritidae
Margaritidae is a family of small sea snails, marine gastropod mollusks in the superfamily Trochoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Bouchet, P. (2012). Margaritidae. Accessed through: World Register ...
.
[Bouchet, P. (2012). ''Gaza rathbuni''. Accessed through: ]World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Content
The content of the registry is edited and maintained by scientific specialis ...
at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575616 on 2012-12-03
Description
The size of the discoid shell varies between 24 mm and 30 mm. The teleoconch consists of 4.5 weakly convex
whorls. This species differs from ''
Gaza superba'' by being more depressed, with stronger spiral grooving, a slightly smaller
umbilicus, and more flattened over the
sutures. The periostracum is olivaceous, polished, very thin and readily dehiscent. The
operculum contains about seven whorls, thin and polished, slightly centrally concave, with a narrow thinner band marginating the coil.
The soft parts recall those of ''Gaza superba'', but the muzzle seems shorter and there are seven slender, rather long epipodial filaments on the right side, instead of five as in ''Gaza superba''.
Dall, W.H. (1890) Scientific results of explorations by the U.S. Fish Commission Steamer Albatross. No. VII – Preliminary report on the collection of Mollusca and Brachiopoda obtained in 1887–88. Proceedings of the United States National Museum, 12, 219–362, pls. 5–14
/ref>
Distribution
This species occurs in the Pacific Ocean off the Galapagos Islands and the Gulf of Panama
The Gulf of Panama ( es, Golfo de Panamá) is a gulf of the Pacific Ocean off the southern coast of Panama, where most of eastern Panama's southern shores adjoin it. The Gulf has a maximum width of , a maximum depth of and the size of . The Pana ...
.
References
* Finet, Y., 1995. ''Marine Molluscs of the Galapagos: Gastropods. A monograph and revision of the families Trochidae, Skeneidae, Turbinidae and Neritidae.'' First edition ed. L'Informatore Piceno, Italy.
Luiz Ricardo L. Simone & Carlo M. Cunha, ''Revision of genera Gaza and Callogaza (Vetigastropoda, Trochidae), with description of a new Brazilian species''; Zootaxa1318: 1–40 (2006)
External links
To USNM Invertebrate Zoology Mollusca Collection
To World Register of Marine Species
*
{{Taxonbar, from=Q5528988
rathbuni
Gastropods described in 1890