''Quadrula'' is a genus of
freshwater mussels,
aquatic bivalve
Bivalvia () or bivalves, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class (biology), class of aquatic animal, aquatic molluscs (marine and freshwater) that have laterally compressed soft bodies enclosed b ...
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:
''Quadrula'' World Register of Marine Species
/ref>
* '' Quadrula apiculata'' (Southern mapleleaf)
* '' Quadrula fragosa'' (Winged mapleleaf)
* '' Quadrula nobilis'' (Gulf mapleleaf)
* '' Quadrula quadrula'' (Mapleleaf)
* '' Quadrula rumphiana'' (Ridged mapleleaf)
* '' Quadrula verrucosa'' (Pistolgrip)
References
Bivalve genera
Molluscs of the United States
Taxonomy articles created by Polbot
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