Corey Roelke (IMAGE) University of Texas at Arlington Caption Corey Roelke, a professor of instruction in biology at UT Arlington, has a grant from the Texas Parks and Wildlife Department to see if a rare lizard, Dixon's whiptail, is a new species worthy of protection as an endangered species, or a variant on the common checkered whiptail. Credit Courtesy UT Arlington Usage Restrictions none License Original 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.