<I>Paranthropus</I> (IMAGE) University of Colorado at Boulder Caption A new study led by the University of Colorado Boulder indicates that the males of two ancient homind species, including Paranthropus robustus, pictured here, stayed home while the females roamed. Credit Illustration courtesy of Walter Voigt/Lee Berger/Brett Hilton-Barber Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.