Skull has a sclerotic ring now.
A (compressed) parody of Brainstem from Pinky and the Brain.
Here are the lyrics. If anyone wants to sing along, start from the second to last verse of Brainstem ("White core matter, forebrain, skull..."). I might write an extended version in the future; there are still many parts of the maniraptor skull I haven't included here.
Naris, orbit, lacrimal,
Dentary, teeth, jugal, nasal,
Sclerotic ring, antorbital,
Maxilla, and mandible,
Intramandibular... the skull!