os praearticulare

(plural ossa praearticularia))

prearticular (1) the paired dermal bone of the lower jaw covering the articular mesially, bearing teeth and having a well-developed coronoid process, (2) coronoid (a paired dermal bone bearing teeth located on the upper edge of Meckel\'s cartilage. One pair is found in Acipenseridae and two pairs in Amia and Lepisosteus. Also called presplenial, splenial and intradentary))