Shell Game: Making Sense of Turtle Variation (image) Florida Museum of Natural History Share Print E-Mail Caption Eastern box turtles display a dizzying amount of variation, both in modern and fossil specimens. But plotting shell shape reveals patterns and captures aspects like curvature -- things that are hard to measure in just a single linear feature. Credit Coleman Sheehy / Florida Museum Usage Restrictions Please credit Coleman Sheehy / Florida Museum 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.