''Anisogemmula graeffei'', common name Graeffe's turrid, is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...

, a marine

gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...

mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...

in the

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Turridae Turridae is a Taxonomy (biology), taxonomic family (biology), family name for a number of predatory sea snails, Marine (ocean), marine gastropod mollusks in the superfamily Conoidea.MolluscaBase (2018). Turridae H. Adams & A. Adams, 1853 (1838). ...

, the turrids.

Description

The length of the shell varies between 13 mm and 35 mm. The brownish, fusiform shell is crenulately carinate or cingulate. The ribs are lighter-colored. The median carina is stronger, with larger crenulations. The acute

apex The apex is the highest point of something. The word may also refer to: Arts and media Fictional entities * Apex (comics) A-Bomb Abomination Absorbing Man Abraxas Abyss Abyss is the name of two characters appearing in Ameri ...

is corneous and consists of 3½

whorl A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs). In nature File:Photograph and axial plane floral diagra ...

s. The first one is smooth, the others longitudinally plicate. The ovate

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

is plicate within. The

columella Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire. His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...

is upright. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water i ...

is long and narrow, with a narrow slit above. The acute outer

lip The lips are a horizontal pair of soft appendages attached to the jaws and are the most visible part of the mouth of many animals, including humans. Mammal lips are soft, movable and serve to facilitate the ingestion of food (e.g. sucklin ...

is curved Weinkauff H.C. (1875). Ueber eine kritische Gruppe des Genus Pleurotoma Lam. sensu stricto. Jahrbücher der Deutschen Malakozoologischen Gesellschaft. 2: 285-292, pl. 9
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Distribution

This marine species occurs off the

Fiji Islands Fiji, officially the Republic of Fiji, is an island country in Melanesia, part of Oceania in the South Pacific Ocean. It lies about north-northeast of New Zealand. Fiji consists of an archipelago of more than 330 islands—of which about ...

;

Queensland Queensland ( , commonly abbreviated as Qld) is a States and territories of Australia, state in northeastern Australia, and is the second-largest and third-most populous state in Australia. It is bordered by the Northern Territory, South Austr ...

, Australia; the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

References

* Brazier, J. 1876. ''A list of the Pleurotomidae collected during the Chevert expedition, with the description of the new species.'' Proceedings of the Linnean Society of New South Wales 1: 151–162 * Hedley, C. 1922. ''A revision of the Australian Turridae.'' Records of the Australian Museum 13(6): 213–359, pls 42–56 * Shuto, T. 1969. ''Neogene gastropods from Panay Island, the Philippines.'' Memoires of the Faculty of Science, Kyushu University 19(1): 1-250 * Cernohorsky, W.O. 1978. ''Tropical Pacific marine shells''. Sydney : Pacific Publications 352 pp., 68 pls. * Wilson, B. 1994. ''Australian marine shells. Prosobranch gastropods.'' Kallaroo, WA : Odyssey Publishing Vol. 2 370 pp. * Kantor, Y., Bouchet, P., Fedosov, A., Puillandre, N. & Zaharias, P. (2024). Generic revision of the Recent Turridae (Neogastropoda: Conoidea). Journal of Molluscan Studies. eyae032: 1-40.

External links

Gastropods.com: ''Gemmula (Gemmula) graeffei''

Tucker, J.K. 2004 ''Catalog of recent and fossil turrids (Mollusca: Gastropoda)''. Zootaxa 682:1-1295
{{Commonscat, Anisogemmula graeffei graeffei Gastropods described in 1875