''Teinostoma funiculatum'' 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), ...

of small

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 ...

micromollusk A micromollusc is a shelled mollusc which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine molluscs, although in addition, numerous species of land snails and freshwater molluscs also ...

in the family

Tornidae Tornidae is a family (biology), family of very small and minute sea snails with an Operculum (gastropod), operculum, marine (ocean), marine gastropod mollusks in the clade Littorinimorpha. This family used to be known as the Vitrinellidae.Bouchet ...

.Williams S. T., Karube S. & Ozawa T. (September 2008) "Molecular systematics of Vetigastropoda: Trochidae, Turbinidae and Trochoidea redefined". ''

Zoologica Scripta ''Zoologica Scripta'' is a bimonthly peer-reviewed scientific journal on systematic zoology, published by Wiley-Blackwell on behalf of the Norwegian Academy of Science and Letters and the Royal Swedish Academy of Sciences. It was established in 197 ...

'' 37(5): 483-506.

Distribution

This species is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the island of

Príncipe Príncipe (; ) is the smaller, northern major island of the country of São Tomé and Príncipe lying off the west coast of Africa in the Gulf of Guinea. It has an area of (including offshore islets) and a population of 7,324 at the 2012 Cens ...

São Tomé and Príncipe São Tomé and Príncipe, officially the Democratic Republic of São Tomé and Príncipe, is an island country in the Gulf of Guinea, off the western equatorial coast of Central Africa. It consists of two archipelagos around the two main isla ...

.Rubio F. & Rolán E. (1991 ["1990"])
Aportaciones a los conocimientos sobre los micromoluscos de África Occidental. 2 Archaeogastropoda de São Tomé y Principe
'. Iberus 9(1-2): 209-219

References

Tornidae Endemic fauna of Príncipe Invertebrates of São Tomé and Príncipe Gastropods described in 1991 Taxonomy articles created by Polbot {{Tornidae-stub