Pic 8 (IMAGE) University of the Witwatersrand Caption 1.5 cm long Priscomyzon hatchling showing bulge of yolk sac material. Photo at left, annotated photo at centre and drawing at right. Figure from paper. Picture credit Nature publishing group. Credit Nature Publishing Group Usage Restrictions None 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.