Evolution of cetaceans "Caperea marginata") all have derived characteristics presently unknown in any cetothere and vice versa (such as a sagittal crest). The adaptation of echolocation occurred when toothed whales (Odontoceti) split apart from baleen whales, and distinguishes modern toothed whales from fully aquatic archaeocetes. This happened around 34 million years ago in a second cetacean radiation. Modern toothed whales do not rely on their sense of sight, but rather on their sonar to hunt prey. Echolocation also allowed toothed whales to dive deeper in search of food, with light no longer necessary for navigation, which opened up new food sources. Toothed whales
How Can You Be in Two Places at Once When You're Not Anywhere at All How Can You Be in Two Places at Once When You're Not Anywhere at All How Can You Be in Two Places at Once When You're Not Anywhere at All is the second comedy album recorded by The Firesign Theatre. It was originally released in July 1969 by Columbia Records. This side of the vinyl LP was not divided into separate tracks, but the liner notes list the following titles and tracks: The album consists of two 28-minute pieces, each taking up one side of the original vinyl release. This opens with a late-night TV commercial by car salesman Ralph