Cracked Skin and Crocodile Scales (4 of 6) (image) American Association for the Advancement of Science Share Print E-Mail Caption A juvenile Nile crocodile. This image relates to a paper that appeared in the Nov. 29, 2012, issue of Science Express, published by AAAS. The paper, by Michel C. Milinkovitch at the University of Geneva in Genève, Switzerland, and colleagues was titled, "Crocodile Head Scales Are Not Developmental Units But Emerge from Physical Cracking." Credit Image courtesy of Michel C. Milinkovitch Usage Restrictions Please cite the owner of the image when publishing. This image may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. 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.