Fig. 2
From: Caught in the act? Distraction sinking in ammonoid cephalopods
Overview of the two specimens of Metadimorphoceras sp. (AMNH 108497) from the Bear Gulch Limestone, Montana. a Photo under white light, at a low angle. b Photo using Reflectance Transformation Imaging (RTI) at Yale University, New Haven, Connecticut. c Photo under blue and red light at the Soleil Synchrotron, Gif-sur-Yvette, France (color figure online)