The Adélie Penguin, Pygoscelis adeliae, is a species of penguin common along the entire Antarctic coast and its nearby islands. They are among the most southerly distributed of all seabirds, along with the Emperor Penguin, South Polar Skua, Wilson's Storm Petrel, Snow Petrel, and Antarctic Petrel. In 1840, French explorer Jules Dumont d'Urville named them for his wife, Adélie.The Adélie Penguin is one of three species in the genus Pygoscelis. Mitochondrial and nuclear DNA evidence suggests the genus split from other penguins around 38 million years ago, about 2 million years after the ancestors of the genus Aptenodytes. In turn, the Adélie penguins split off from the other members of the genus around 19 million years ago.