Cross-Section through a Humerus (image) University of Bonn Share Print E-Mail Caption Cross-section through a humerus of Panthasaurus maleriensis (above), the growth sequence is marked in blue. Below: Histological thin-section of the bone growth. Shown is the periodic occurrence of zones (zo) and annuli (an). Credit Elzbieta M. Teschner Usage Restrictions Please use this picture only in connection with the press release. 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.