''Nassarius pachychilus'', the Angolan nassa, 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
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a marine
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusc
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 esti ...
in the
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Nassariidae
The Nassariidae, Nassa mud snails (USA), or dog whelks (UK), are a taxonomic family of small to medium-sized sea snails, marine gastropod mollusks in the clade Neogastropoda.
"Dog whelk" also refers to ''Nucella lapillus''.
Shell description
T ...
, the Nassa mud snails or dog whelks.
Description
The shell size varies between 11 mm and 20 mm.
Distribution
This species occurs in the Atlantic Ocean off
Senegal
Senegal,; Wolof: ''Senegaal''; Pulaar: 𞤅𞤫𞤲𞤫𞤺𞤢𞥄𞤤𞤠(Senegaali); Arabic: السنغال ''As-Sinighal'') officially the Republic of Senegal,; Wolof: ''Réewum Senegaal''; Pulaar : 𞤈𞤫𞤲𞤣𞤢𞥄𞤲𞤣𞤠ðž ...
,
Ghana
Ghana (; tw, Gaana, ee, Gana), officially the Republic of Ghana, is a country in West Africa. It abuts the Gulf of Guinea and the Atlantic Ocean to the south, sharing borders with Ivory Coast in the west, Burkina Faso in the north, and To ...
and
Angola
, national_anthem = " Angola Avante"()
, image_map =
, map_caption =
, capital = Luanda
, religion =
, religion_year = 2020
, religion_ref =
, coordina ...
.
References
* Adam W. & Knudsen J. 1984. ''Révision des Nassariidae (Mollusca : Gastropoda Prosobranchia) de l’Afrique occidentale''. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique 55(9): 1-95, 5 pl.
* Cernohorsky W. O. (1984). ''Systematics of the family Nassariidae (Mollusca: Gastropoda).'' Bulletin of the Auckland Institute and Museum 14: 1–356.
* Bernard, P.A. (Ed.) (1984). ''Coquillages du Gabon
hells of Gabon'. Pierre A. Bernard: Libreville, Gabon. 140, 75 plates pp
* Gofas, S.; Afonso, J.P.; Brandà o, 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.
External links
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*
{{Taxonbar, from=Q12062358
Nassariidae
Gastropods described in 1884