1. It is also unique among rauisuchids by possessing five antorbital fossa. 2. In contrast, most ornithischian dinosaurs reduce and even close their antorbital fenestrae 3. It is positioned where the antorbital fenestra would normally be. 4. Furthermore, the braincase possesses multiple antorbital fossa, leading to maxillary sinuses. 5. The antorbital fenestra is large instead of very small. 6. Unlike derived neosuchians, it had external antorbital fenestrae. 7. The main body of the maxilla has no depression around the antorbital fenestra. 8. Although crocodylians walled over their antorbital fenestra, they still retain an antorbital sinus. 9. Although crocodylians walled over their antorbital fenestra, they still retain an antorbital sinus. 10. In theropod dinosaurs, the antorbital fenestra is the largest opening in the skull.
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