''Atlantica gueriniana'' 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 small air-breathing
land snail
A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...
, a
terrestrial 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 ...
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 ...
presently in the family
Gastrodontidae
Gastrodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). MolluscaBase eds. (2020). MolluscaBase ...
,
[MolluscaBase eds. (2022). MolluscaBase. Atlantica gueriniana (R. T. Lowe, 1852). Accessed through: World Register of Marine Species at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1002131 on 2023-06-19] but formerly in
Discidae
Discidae is a taxonomic family of small air-breathing land snails, terrestrial gastropod mollusks in the superfamily Punctoidea.
Genera
The family Discidae has no subfamilies. Genera within the family Discidae include:
* ''Anguispira'' Morse, ...
, the disk snails.
[
]
Distribution
This species is endemic to Madeira
)
, anthem = ( en, "Anthem of the Autonomous Region of Madeira")
, song_type = Regional anthem
, image_map=EU-Portugal_with_Madeira_circled.svg
, map_alt=Location of Madeira
, map_caption=Location of Madeira
, subdivision_type=Sovereign st ...
, Portugal.
Shell description
The shell of these snails is shaped like a discus, or a lens, with a noticeable "edge" around the periphery of the whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s.
Conservation status
This species is mentioned in annexes IV and IV of the Habitats Directive.
References
{{Gastrodontidae-stub
Gastrodontidae
Taxa named by Richard Thomas Lowe
Gastropods described in 1852
Endemic fauna of Madeira
Molluscs of Madeira
Habitats Directive Species
Taxobox binomials not recognized by IUCN