A newly discovered early whale called a Peregocetus, which lived about 43 million years ago, pictured on a rocky shore on the southeastern Pacific in this artists impression released on Wednesday, April 3, 2019. The structure of the tail fluke is purely hypothetical. [Photo: VCG]"

This artist's impression obtained on Wednesday, April 3, 2019 courtesy of Olivier Lambert, shows the left mandible of the Peregocetus. Paleontologists have unearthed a well-preserved fossil of this quadruped amphibian whale ancestor on the Peruvian coast. The discovery complements the existing knowledge about the transition of these mammals from the land to the oceans. [Photo: VCG]"

This artist's impression of two Peregocetus by Alberto Gennari, obtained on Wednesday, April 3, 2019 courtesy of Olivier Lambert, shows one standing along the rocky shore of what is nowadays Peru while the other preys upon sparid fish. [Photo: VCG]"

This artist's impression obtained on Wednesday, April 3, 2019 courtesy of Olivier Lambert shows the bones of a Peregocetus, including a rib, still partly buried in Playa Media Luna. Paleontologists have unearthed the well-preserved fossil of this quadruped amphibian whale ancestor on the Peruvian coast. [Photo: VCG]"