Morphological Variation in the Stapes of Triassic Gomphodont Cynodonts (image) University of the Witwatersrand Share Print E-Mail Caption This image shows morphological variation in the stapes of Triassic gomphodont cynodonts. A, Diademodon; B, Trirachodon; C and D, Massetognathus. Below is the ventral view of the skull of a cynodont showing the position of the stapes. Credit Wits University Usage Restrictions None 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.