''Bolma johnstoni'' 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 ...

Turbinidae Turbinidae, the turban snails, are a family of small to large marine gastropod molluscs in the superfamily Trochoidea.Bouchet, P. (2014). Turbinidae Rafinesque, 1815. Accessed through: World Register of Marine Species at http://www.marinespecies ...

, the turban snails.

Description

The shell grows to a length of 37 mm

Distribution

This species occurs in the Atlantic Ocean off

Sierra Leone Sierra Leone,)]. officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered by Liberia to the southeast and Guinea surrounds the northern half of the nation. Covering a total area of , Sierr ...

and

Angola , national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordina ...

References

* Odhner, N.H. (1923) ''Contribution to the marine molluscan faunas of South and West Africa''. Meddelanden fran Göteborgs Musei Zoologiska Avdelning, 23, 1–39, 1 pl. * Nolf F. 2005. ''A new species of Bolma (Gastropoda: Turbinoidea: Turbinidae) from Angola''. Neptunea 4 (5) : 1–7 * Gofas, S.; Afonso, J.P.; Brandào, M. (Ed.). (S.a.). ''Conchas e Moluscos de Angola = Coquillages et Mollusques d'Angola. hells and molluscs of Angola'. Universidade Agostinho / Elf Aquitaine Angola: Angola. 140 pp. johnstoni Gastropods described in 1923 {{Turbinidae-stub