Iniidae

Iniidae is a family of river dolphins containing one living genus, Inia, and four extinct genera. The living genus lives in the river basins of South America, but the family formerly had a wider presence across the Atlantic Ocean.

Inia is a genus of river dolphins from South America, containing one to four species.

Isthminia (named after the Republic of Panama and its people) is a genus of medium-sized river dolphin cetaceans that lived during the Late Miocene epoch in what is now the coasts of Panama, about 6.1 million to 5.8 million years ago. The type species is I. panamensis, known from the littoral Chagres Formation.