27-million-year-old fossil of newly-discovered toothed whale species provides clues about evolution of high-frequency hearing. Echovenator sandersi produces sound that bounces off prey, creating echoes; the whale’s inner ear receives the sound waves. Image credit: A. Gennari. In a study published in the journal Current Biology, a team of paleontologists describes Echovenator sandersi, an ancient relative of modern dolphins, and its ability to hear...
