A team of U.S. paleontologists has described a remarkable new species of whale that lived about 33 million years ago (Oligocene epoch). The researchers found that this toothless whale, named Maiabalaena nesbittae, had no baleen, showing a surprising intermediary step between the baleen whales that live today and their toothed ancestors. An artistic reconstruction of a mother and calf of Maiabalaena nesbittae nursing offshore of Oregon during the Oligocene,...
