Coluber Constrictor (image) American Museum of Natural History Share Print E-Mail Caption This photo is of a coluber constrictor, one of the vertebrates included in the study. Credit © AMNH/F. Burbrink Usage Restrictions Can be used with appropriate credit Share Print E-Mail 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.