Pusionella aculeiformis
Encyclopedia
Pusionella aculeiformis is a species
of sea snail
, a marine gastropod mollusk in the family
Clavatulidae
.
The shell is elongated. The whorls
of the spire are more or less plicately ribbed, sometimes only the upper ones. The body whorl
is smooth except at the base, where there are revolving grooves. The color of the shell is very light grayish yellow, or yellowish brown, or chestnut.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of sea snail
Sea snail
Sea snail is a common name for those snails that normally live in saltwater, marine gastropod molluscs....
, a marine gastropod mollusk in the family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
Clavatulidae
Clavatulidae
Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea.The family is not well differentiated morphologically....
.
Description
The size of an adult shell varies between 31 mm and 54 mm.The shell is elongated. The whorls
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the...
of the spire are more or less plicately ribbed, sometimes only the upper ones. The body whorl
Body whorl
Body whorl is part of the morphology of a coiled gastropod mollusk.- In gastropods :In gastropods, the body whorl, or last whorl, is the most recently-formed and largest whorl of a spiral or helical shell, terminating in the aperture...
is smooth except at the base, where there are revolving grooves. The color of the shell is very light grayish yellow, or yellowish brown, or chestnut.
Distribution
This species occurs in the Atlantic Ocean along West Africa and particularly GabonGabon
Gabon , officially the Gabonese Republic is a state in west central Africa sharing borders with Equatorial Guinea to the northwest, Cameroon to the north, and with the Republic of the Congo curving around the east and south. The Gulf of Guinea, an arm of the Atlantic Ocean is to the west...