involves some kind of sensory organ occupying the maxillary fossa. Uniquely among therapsids, the canal within the maxilla is exposed on the back side of the maxillary fossa, which implies that the canal, carrying the trigeminal nerve, would probably have extended across the fossa, outside of the outline of the skull. Benoit et al.
A sensory organ occupies the maxillary fossa in this case. Among therapsids, uniquely, the canal within the maxilla is exposed on the back side of the maxillary fossa, indicating that the canal carrying the trigeminal nerve would probably extend across the fossa, beyond the skull's boundary. Benoit et al.