Melanosomes under the Microscope (image) Brown University Share Print E-Mail Caption Researchers found what appear to be melanosome organelles in the barbules of the dinosaur feathers. Chemical tests associated them with animal pigment. Credit J. Lindgren, et. al. Usage Restrictions with 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.