Pterygoid bones are present. Internal carotid foramina are absent from parasphenoid bones. The angular bone is separated from the mandible. Ear bones include a detached columella but no operculum. Replacement of vomerine teeth proceeds laterally in parallel to the maxillary teeth.
Teeth have a distinct crown and pedicel.
Origin of the levator mandibulae anterior superficialis muscle includes the exoccipital. Eyelids are absent. A basilaris complex is present in the inner ear. The recessus amphibiorum is oriented horizontally in the inner ear. The otic sac is bulbar and unvascularized.