Yellow pigtoe
Encyclopedia
The yellow pigtoe, Pleurobema flavidulum, was a species of freshwater mussel, an aquatic
bivalve mollusk in the Unionidae
family. It was endemic to the United States
. Its natural habitat
was river
s. It is now extinct.
Aquatic animal
An aquatic animal is an animal, either vertebrate or invertebrate, which lives in water for most or all of its life. It may breathe air or extract its oxygen from that dissolved in water through specialised organs called gills, or directly through its skin. Natural environments and the animals that...
bivalve mollusk in the Unionidae
Unionidae
Unionidae is a family of freshwater mussels, the largest in the order Unionoida, the bivalve mollusks sometimes known as river mussels, naiads, or simply as unionids.The range of distribution for this family is world-wide...
family. It was endemic to the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
. Its natural habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...
was river
River
A river is a natural watercourse, usually freshwater, flowing towards an ocean, a lake, a sea, or another river. In a few cases, a river simply flows into the ground or dries up completely before reaching another body of water. Small rivers may also be called by several other names, including...
s. It is now extinct.