Video 1 Callichimaera (VIDEO) Smithsonian Tropical Research Institute This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Callichimaera perplexa: The puzzling mid-Cretaceous crab that forces a rethink of what a crab is. Credit Images by Daniel Ocampo R., Vencejo Films, & Javier Luque, Yale University / animation and 3D reconstruction by Alex Duque. Usage Restrictions Credit: Images by Daniel Ocampo R., Vencejo Films, & Javier Luque, Yale University / animation and 3D reconstruction by Alex Duque. 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.