Pharyngeal arch bone immediately posterior to the ascending process, the medial surface of which articulates with the anterior end of the maxillary. [ PHENOSCAPE ]
Synonyms: articular process of the premaxilla
Term information
The change from a premaxilla in which the ascending and articular processes are separate to one in which they are firmly united has occurred many times in higher teleosts. - Gosline, 1987 (Jaw Structures and Movements in Higher Teleostean Fishes)