Basommatophora

Basommatophora is a taxonomic suborder of air-breathing water snails, pulmonate gastropods in the order Pulmonata.

Most of the families in this suborder are freshwater snails, but the Siphonariidae and the Trimusculidae are unusual in that they have secondarily returned to the sea, and are now marine gastropods. 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 terrestrial.

Families

• Acroloxidae Thiele, 1931
• Amphibolidae J. E. Gray, 1840 - only one species Amphibola crenata
• Ancylidae
• Carychiidae Jeffreys, 1830
• Chilinidae
• Lancidae
• Latiidae
• Lymnaeidae Rafinesque, 1815
• Otinidae H. Adams & A. Adams, 1855
• Physidae Fitzinger, 1833
• Planorbidae Rafinesque, 1815
• Siphonariidae J. E. Gray, 1840
• Trimusculidae Zilch, 1959

In the new taxonomy of Bouchet & Rocroi (2005) this suborder has been split into an informal group Basommatophora, a clade Hygrophila and a clade Eupulmonata

• Informal group Basommatophora
• Superfamily Amphiboloidea Gray, 1840
• Family Amphibolidae Gray, 1840
• Superfamily Siphonarioidea Gray, 1827
• Family Siphonariidae Gray, 1827
• †Family Acroreiidae Cossmann, 1893
• Clade Hygrophila
• Superfamily Chilinoidea Dall, 1870
• Family Chilinidae Dall, 1870
• Family Latiidae Hutton, 1882
• Superfamily Acroloxoidea Thiele, 1930
• Family Acroloxidae Thiele, 1931
• Superfamily Lymnaeoidea Rafinesque, 1815
• Family Lymnaeidae Rafinesque, 1815
• Superfamily Planorboidea Rafinesque, 1815
• Family Physidae Fitzinger, 1833
• Family Planorbidae Rafinesque, 1815
• Clade Eupulmonata
• Superfamily Trimusculoidea J.Q. Burch, 1945 (1840)
• Family Trimusculidae J.Q. Burch, 1945 (1840)
• Superfamily Otinoidea H.Adams & A. Adams, 1855
• Family Otinidae H.Adams & A.Adams, 1855
• Superfamily Ellobioidea L.Pfeiffer, 1854 (1822)
• Family Ellobiidae L. Pfeiffer, 1854 (1822)

The family Ancylidae has been reduced in this taxonomy to the status of tribe Ancylini Rafiniesque, 1815 of the subfamily Planorbinae Rafinesque, 1815 of the family Planorbidae Rafinesque, 1815

The family Carychiidae has been reduced in this taxonomy to the status of subfamily Carychiinae Jeffreys, 1830 of the family Ellobiidae L. Pfeiffer, 1854 (1822)

The family Lancidae has been reduced in this taxonomy to the status of subfamily Lancinae Hannibal, 1814 of the family Lymnaeidae Rafinesque, 1815 .

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Last updated on Friday May 02, 2008 at 18:43:30 PDT (GMT -0700)
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