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Quadrula
Sign in to saveQuadrula is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae native to rivers of the American Midwest and mid-south. All have thick nacreous shells with well-developed hinge teeth, many also with external shell sculpturing of nodules or lumps.
Species
Genus
- PhylumMollusca
- ClassBivalvia
- OrderUnionida
- FamilyUnionidae
方蚌屬（学名：Quadrula）是美國中西部及中南部特有的淡水蚌的屬，是一種蚌科小方蚌亚科方蚌族的一個淡水雙殼綱軟體動物。 目录 1 型態特徵 2 棲息地 3 物種 4 參考文獻 5 外部連結 型態特徵 方蚌屬物種外殼的珠母層很厚，有很發達的鉸齒。 棲息地 牠們棲息在河流，但受到失去棲息地的威脅[1]。 物種 2012年，本屬多個物種基於遺傳學及型態學實證而被移往Rotundaria及Theliderma這兩個屬[2]。現時本屬只餘下下列六個物種[3]： Quadrula verrucosa Southern mapleleaf (Quadrula apiculata) Winged mapleleaf (Quadrula fragosa) Gulf mapleleaf (Quadrula nobilis) Mapleleaf (Quadrula quadrula) Ridged mapleleaf (Quadrula rumphiana) Pistolgrip (Quadrula verrucosa) 以下物種舊屬本屬： 中間方蚌 稀少方蚌 參考文獻 ^ 1.0 1.1 （英文） Bogan, A.E. (2000). Quadrula intermedia. 2009 IUCN Red List of Threatened Species. IUCN 2009. 撷取於2009-07-23. ^ Campbell, David; Lydeard, Charles. The Genera of Pleurobemini (Bivalvia: Unionidae: Ambleminae). American Malacological Bulletin. 2012, 30 (1): 19–38 （英语）. ^ WoRMS. Quadrula. World Register of Marine Species.
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- Species within the genus ''Quadrula''
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Quadrula is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae native to rivers of the American Midwest and mid-south. All have thick nacreous shells with well-developed hinge teeth, many also with external shell sculpturing of nodules or lumps.
==Species within the genus Quadrula== In 2012, many species classified as Quadrula were moved to Rotundaria and Theliderma based on genetic and morphological evidence. Species currently in Quadrula now consist of: right|thumb|Quadrula verrucosa Quadrula apiculata (Southern mapleleaf) Quadrula fragosa (Winged mapleleaf) Quadrula nobilis (Gulf mapleleaf) Quadrula quadrula (Mapleleaf) Quadrula rumphiana (Ridged mapleleaf) Quadrula verrucosa (Pistolgrip)