Platylithophycus SEM (image) American Museum of Natural History Share Print E-Mail Caption A scanning electron micrograph image of the surface of the Platylithophycus cretaceus fossil specimen, showing the tessellated calcified cartilage. Scale bar is 200 micrometers. Credit © AMNH/A. Bronson 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.