''Petaloconchus intortus'' is an extinct

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 ...

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

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 ...

Vermetidae, the worm snails or worm shells.MolluscaBase eds. (2021). MolluscaBase. Petaloconchus intortus (Lamarck, 1818) †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1440565 on 1 January 2022

Distribution

Fossils of this species were found in Southern France.

References

* Landau B.M., Ceulemans L. & Van Dingenen F. (2018). The upper Miocene gastropods of northwestern France, 2. Caenogastropoda. Cainozoic Research. 18(2): 177–368.

External links

Lamarck, J.-B., 1818. ''Histoire naturelle des animaux sans vertèbres, présentant les caractères généraux et particuliers de ces animaux...'', Tome 5 (1818): 1–612.
*Encyclopedia of Life, ''Petaloconchus intortus'' http://eol.org/pages/4878345/names *Fossilworks, ''Petaloconchus intortus'' https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=114784 Vermetidae Taxa named by Jean-Baptiste Lamarck Gastropods described in 1818 {{Vermetidae-stub