11. These diaphyses compress meat fibers between the serrations and rip them apart. 12. Their outstandingly large serrations make it a favorite and unique collectible fossil. 13. In 1952, specific name refers to the unequal serrations on the teeth. 14. Their outstandingly large serrations make it a favorite collectible. 15. Its upper teeth are broad with strong serrations only on the trailing edge. 16. The lower rear legs are wider than the upper legs, with serrations . 17. The shell has marginal serrations which are the reason for its common name. 18. The Major Grasp Slide Serrations were modified for a better more penetrating grasp. 19. The teeth bear prominent, apically oriented serrations . 20. The Super Hornet also makes considerable use of panel joint serration and edge alignment.