''Obovaria'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

freshwater mussel Freshwater bivalves are one kind of freshwater mollusc, along with freshwater snails. They are bivalves that live in fresh water as opposed to salt water, which is the main habitat type for bivalves. The majority of species of bivalve molluscs ...

s, aquatic

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s in the family

Unionidae The Unionidae are a family of freshwater mussels, the largest in the order Unionida, the bivalve molluscs sometimes known as river mussels, or simply as unionids. The range of distribution for this family is world-wide. It is at its most diverse ...

, the river mussels. There are at least six described species in ''Obovaria'' at present, all of which are found in the

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territorie ...

. ''Obovaria subrotunda'' is found in Canada as well.

Species

* ''

Obovaria arkansasensis ''Obovaria arkansasensis'', the Ouachita creekshell, is a species of freshwater mussel, an aquatic bivalve mollusc in the family Unionidae, the river mussels. It is endemic to certain rivers and streams in the Ouachita Mountains, Arkansas, and ...

'' (I. Lea, 1862) * '' Obovaria haddletoni'' (Athearn, 1964) (Haddleton lampmussel), ( Critically Endangered) * '' Obovaria jacksoniana'' (Frierson, 1912) (Southern hickorynut) * ''

Obovaria olivaria ''Obovaria olivaria'' is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. It is commonly referred to as "hickorynut". The species is native to eastern North America. It is found in the drai ...

'' (

Rafinesque Constantine Samuel Rafinesque-Schmaltz (; October 22, 1783September 18, 1840) was a French 19th-century polymath born near Constantinople in the Ottoman Empire and self-educated in France. He traveled as a young man in the United States, ultimat ...

, 1820) (Hickorynut)

* '' Obovaria retusa'' (

Lamarck Jean-Baptiste Pierre Antoine de Monet, chevalier de Lamarck (1 August 1744 – 18 December 1829), often known simply as Lamarck (; ), was a French naturalist, biologist, academic, and soldier. He was an early proponent of the idea that biolog ...

, 1819) (Golf stick pearly mussel or ring pink mussel), ( Critically Endangered) * ''

Obovaria subrotunda ''Obovaria subrotunda'', common name the round hickorynut, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. Distribution and conservation status This species is native to eastern No ...

'' (Rafinesque, 1820) (Round hickorynut) * '' Obovaria unicolor'' (Lea, 1845) (Alabama hickorynut)

References

Bivalve genera Taxa named by Constantine Samuel Rafinesque Taxonomy articles created by Polbot {{Unionidae-stub