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Researchers have discovered two unknown dolphins in Switzerland

About twenty million years ago, the Swiss plateau was flooded by the sea. Sharks, rays, whales and dolphins swam in the water. Paleontologists in Zurich have now identified two families of dolphins for the first time based on fossils.

Researchers led by Gabriel Aguirre Fernandez have analyzed about 300 fossil remains of marine mammals kept in four Swiss museums. They were particularly interested in the bones of the inner ear because they allow the classification of individual species, As announced by the University of Zurich on Tuesday.