''Anisus calculiformis'' is a very small
species of air-breathing
freshwater snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs ...
, an
aquatic pulmonate
Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...
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 in the family
Planorbidae, the
ram's horn snails.
Synonyms
Most authors misidentified ''Anisus calculiformis'', applying the name ''Anisus septemgyratus'' to animals which are in reality ''Anisus calculiformis''. So ''Anisus septemgyratus'' auct. (not Rossmässler) is synonymous with ''Anisus calculiformis''.
The database
WoRMS on the other hand considers this name a junior synonym of ''
Anisus septemgyratus
''Anisus septemgyratus'' is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.
Taxonomy
Glöer (2002) Glöer P. (2002). ''Die Süßwassergastropoden Nord- und ...
''
(Rossmässler, 1835)
Distribution
This species occurs in:
*
Czech Republic – in Moravia, critically endangered (CR)
Red List of the molluscs (Mollusca) of the Czech Republic
/ref>
* Poland
* Slovakia
* British Isles
* ...
See also
* '' Anisus leucostoma''
References
External links
* http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=3240
Planorbidae
Gastropods described in 1874
{{Planorbidae-stub