Southern Redback Salamander (<i>Plethodon serratus</i>) (IMAGE) University of Missouri-Columbia Caption Semlitsch's study measured the population density and biomass of the Southern Redback Salamander in the Ozark Highlands in Missouri. Credit Katie O'Donnell 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.