The tympanic process of the alisphenoid bone of the skull is short, not covering the cavity of the tympanum, nor reaching the paroccipital process.
The post-glenoid, post-tympanic and paroccipital processes of the skull are large, and there is an alisphenoid canal.
The postglenoid, post-tympanic and paroccipital processes of the skull are large; the second of these being always distinct.
In the skull the lachrymal bone is large, the paroccipital process is directed vertically downwards and the tympanic bulla is hollow.
Behind this the exoccipital gives off a long paroccipital process.