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.
In 2012, many species classified as Quadrula were moved to Rotundaria and Theliderma based on genetic and morphological evidence.[1] Species currently in Quadrula now consist of:[2]
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.
Quadrula es un género de mejillones de agua dulce, moluscos bivalvos de la familia Unionidae, nativa de los ríos del Medio Oeste y cetro-sur de Estados Unidos.
Quadrula es un género de mejillones de agua dulce, moluscos bivalvos de la familia Unionidae, nativa de los ríos del Medio Oeste y cetro-sur de Estados Unidos.
quadrula
Quadrula est un genre de mollusques bivalves d'eau douce.
Selon ITIS (31 janvier 2014)[1] :
Selon NCBI (31 janvier 2014)[2] :
quadrula
Quadrula est un genre de mollusques bivalves d'eau douce.
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。
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]：
以下物種舊屬本屬：
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