7. A cartilaginous sclera is present.
8. The taenia tecta marginalis and the tectum synoticum are the only roofing cartilages present.
9. The external part of the plectral apparatus (columella) is directed anterolaterally. The pars ascendens plectri is fused with the crista parotica.
10. The pseudobasal process is fused to the otic capsule.
11. The cornu principalis of the hyale fuses with the pseudobasal process.
12. Two acoustic foramina are present.
13. The sphenethmoid and prootic are synchondrotically united.
14. The frontoparietal is separate from the prootic and exoccipital.
15. The prootic and exoccipital are fused.
16. A bursa angularis oris is present.