Pterygoid bones are present. An internal carotid foramen is present in the parasphenoid bone. The angular bone is fused to 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. A basilaris complex is absent from the inner ear. The recessus amphibiorum is oriented vertically in the inner ear. The otic sac is bulbar and unvascularized. The amphibian periotic canal lacks fibrous connective tissue.