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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. [1]
Isthminia panamensis is an extinct genus and species of river dolphin, living 5.8 to 6.1 million years ago. Its fossils were discovered near Piña, Panama. [15] [16]
Iniidae is a family of river dolphins containing one living genus, Inia, and four extinct genera.The extant genus inhabits the river basins of South America, but the family formerly had a wider presence across the Atlantic Ocean.
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Isthminia [70] Gen. et sp. nov Valid Pyenson et al. Miocene Chagres Formation Panama. An inioid river dolphin. The type species is Isthminia panamensis. Nanokogia [71] Gen. et sp. nov Valid Velez-Juarbe et al. Late Miocene Chagres Formation Panama. A member of Kogiidae. The type species is Nanokogia isthmia. Otekaikea huata [72] Sp. nov Valid
The Chagres Formation is exposed in the northern part of the Panama Canal Zone.The formation overlies and partly overlaps the Gatún Formation.The outcrop area lies entirely west of the Panama Canal, extending from the Canal Zone southwestward along the Caribbean coast, about 45 kilometres (28 mi) southwest of Colón.
This is a list of the mammal species recorded in Panama.Among the mammals in Panama, two are classified as critically endangered, seven are endangered, eleven are vulnerable and three are near threatened.
Meherrinia is an extinct genus of inioid river dolphin from the Meherrin River, North Carolina, in the United States.First described in 2012, the dolphin is, in most respects, intermediate in form between the living Amazon river dolphin and the La Plata dolphin, although it is probably more closely related to the former.