Solenaia

Solenaia is a genus of freshwater mussels in the family Unionidae. They have a very elongated shell that lacks dentition.

Species

There is only one recognized extant species:Solenaia emarginata
There is also one species only known from the fossil record:

†Solenaia cordierii

Many other species have been recognized before. Chinese literature sources have records of at least five different species. However, recent taxonomic work has moved most former Solenaia species to other genera, including Sinosolenaia, Parvasolenaia, and Koreosolenaia.

Distribution

The only extant species, Solenaia emarginata is found in Thailand in Chao Phraya and Mae Klong drainages.