Sea creature leaves trail of evolutionary clues
Tuesday, November 25, 2008 - 16:14
in Biology & Nature
Single-cell organisms are found rolling along the ocean floor, leaving animal-like tracks that researchers had thought could be made only by complex creatures. Biologists exploring the ocean floor for new sea creatures have stumbled upon one of the largest known single-celled creatures, a bland, grape-sized distant cousin of the amoeba that may solve a thorny evolutionary question that has puzzled researchers for decades.