The larger of the two basommatophoran snails shown here is Lymnaea stagnalis
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
Subclass:
Heterobranchia
Informal group:
Pulmonata
Informal group:
Basommatophora Keferstein in Bronn, 1864
Families
See text
Diversity[1]
about 300 species
Basommatophora was a term that was previously used as a taxonomic informal group, a group of snails within the informal group Pulmonata, the air-breathing slugs and snails. According to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), whenever monophyly has not been tested, or where a traditional taxon of gastropods has now been discovered to be paraphyletic or polyphyletic, the term "group" or "informal group" was used.
Basommatophora are known from the Carboniferous to the Recent periods.[2]
Most of the families in this suborder are air-breathing freshwater snails. The three most abundant families in terms of number of species are, the Lymnaeidae (pond snails), the Planorbidae (ramshorn snails) and the Physidae (pouch or bubble snails). These are found in ponds, creeks, ditches, and shallow lakes nearly worldwide.
The Siphonariidae on the other hand are unusual in that they have secondarily returned to the sea, and are now sea snails, limpet-like marine gastropods which live in the rocky intertidal zone but which still breathe air and become active at low tide. The single species in the family Amphibolidae is archaic and retains an operculum. It lives at such a high tidal level that it could perhaps be considered semi-terrestrial. Members of the family Chilinidae are confined to temperate parts of South America, and the Latiidae are limpet-like and confined to New Zealand.
Basommatophorans are characterized by having their eyes located at the base of their non-retractile tentacles, rather than at the tips, as in the true land snails Stylommatophora. The majority of basommatophorans have shells that are thin, translucent, and relatively colorless, and all except Amphibola lack an operculum.
^Correa C. A., Escobar J. S., Durand P., Renaud F., David P., Jarne P., Pointier J.-P. & Hurtrez-Boussès S. (2010). "Bridging gaps in the molecular phylogeny of the Lymnaeidae (Gastropoda: Pulmonata), vectors of Fascioliasis". BMC Evolutionary Biology10: 381. doi:10.1186/1471-2148-10-381.
^(in Czech) Pek I., Vašíček Z., Roček Z., Hajn. V. & Mikuláš R.: Základy zoopaleontologie. - Olomouc, 1996. 264 pp., ISBN 80-7067-599-3.
Basommatophora was a term that was previously used as a taxonomic informal group, a group of snails within the informal group Pulmonata, the air-breathing...
is only one species which is shell-less Tantulum elegans. Pulmonata, Basommatophora Basommatophorans are pulmonate or air-breathing aquatic snails, characterized...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
(1988). "Biology of Latia neritoides Gray 1850 (Gastropoda, Pulmonata, Basommatophora): the Only Light-producing Freshwater Snail in the World". Internationale...
previously thought to belong in the family Hydrobiidae or even in the Basommatophora. Species within the genus Glacidorbis include: Glacidorbis atrophus...
includes carboniferous land sails and some freshwater snails of the order Basommatophora, are protandrous hermaphrodites, meaning they are born male and later...
(September 2003) "Planorbidae, Lymnaeidae and Physidae of Peru (Mollusca: Basommatophora)". Memórias do Instituto Oswaldo Cruz 98(6): 767-771. PDF Reeves W....
(Bouchet & Rocroi, 2005), it is a superfamily in the informal group Basommatophora, within the Pulmonata. This superfamily has contained only one family...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
has been classified in the clade Hygrophila within the informal group Basommatophora (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005)...
dos ancilídeos na América do Sul (Mollusca: Gastropoda: Pulmonata: Basommatophora)" (PDF). Revista de Biología Tropical (in Portuguese). 51 (3). Redalyc:...
(1994). "Gundlachia dutrae: n. sp. from Northwest Brazil (Mollusca: Basommatophora: Ancylidae)" (PDF). Memórias do Instituto Oswaldo Cruz. 89 (2): 153–160...
tentacles in the Stylommatophora or at the base of the tentacles in the Basommatophora. These eye spots range from simple ocelli that cannot project an image...
Retrieved 15 November 2021. Pilsbry H. A. September 1906. Two new American genera of Basommatophora. The Nautilus, volume 20, number 5, pages 49–50....
classified within the clade Eupulmonata, which was within the informal group Basommatophora, according to the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)...
(2010). "The complete mitochondrial genome of Radix balthica (Pulmonata, Basommatophora), obtained by low coverage shot gun next generation sequencing". Molecular...
shell is more solid than that of Ancylus or Gundlachia. Pilsbry H. A. (1906). "Two new American genera of Basommatophora". The Nautilus 20(5): 49–50....
Gastropoda: Pulmonata: Basommatophora)" [Current state of knowledge of ancylids in South America (Mollusca: Gastropoda: Pulmonata: Basommatophora)] (PDF). Revista...
Lydeard C. (2007). "A molecular phylogeny of Physidae (Gastropoda: Basommatophora) based on mitochondrial DNA sequences". Journal of Molluscan Studies...
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