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.
The winged mapleleaf, also known as false mapleleaf, or hickory nut shell, and with the scientific name Quadrula fragosa, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It is endemic to the United States.
Rotundaria houstonensis, the smooth pimpleback, is a species of freshwater mussel native to the United States. It is endemic to the Colorado and Brazos River drainages in Texas.
Theliderma intermedia, the Cumberland monkeyface pearly mussel or Cumberland monkeyface, is a species of freshwater mussel in the family Unionidae, the river mussels. This aquatic bivalve mollusk is native to Tennessee and Virginia in the United States. Historically widespread in the upper Tennessee River system, it populations have been reduced by habitat destruction and pollution. It now only occurs in two tributaries: the Duck and Powell Rivers. It is a federally listed endangered species.
Quadrula quadrula, the mapleleaf, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Quadrula rumphiana, the ridged mapleleaf, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Theliderma sparsa, the Appalachian monkey-face pearly mussel or Appalachian monkeyface, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Theliderma stapes, the stirrup shell or stirrupshell, was a species of bivalve in the family Unionidae. It was endemic to eastern Mississippi and western Alabama in the United States. It was last observed in 1987 and was proposed for delisting due to extinction by the US Fish and Wildlife Service in 2021.
The southern mapleleaf is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Rotundaria asperata, the Alabama orb, is a species of freshwater mussel, an aquatic bivalve mollusk.
The rabbitsfoot is a species of freshwater mussel. It is an aquatic bivalve mollusk, in the family Unionidae, the river mussels.
Monkeyface or monkey-face may refer to:
Rotundaria succissa is a species of bivalve in the family Unionidae.
Theliderma is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae. They are native to North America.
Fusconaia mitchelli, the false spike, is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels.
Theliderma metanevra, common name the monkeyface, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels.
Ambleminae is a subfamily of freshwater mussel in the family Unionidae. They are found throughout much of eastern North America south to Central America, although fossils are also known from Siberia. Some species have also been introduced to East Asia. They are the most speciose radiation of the Unionidae, with more than 300 species.
