Fossil specimen reveals a new species of ancient river dolphin

The careful examination of fossil fragments from Panama has led Smithsonian scientists and colleagues to the discovery of a new genus and species of river dolphin that has been long extinct. The team named it Isthminia panamensis. The specimen not only revealed a new species to science, but also shed new light onto the evolution of today's freshwater river dolphin species. The team's research was published Sept. 1 in the scientific journal PeerJ.

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