11. Mammals characteristicly seem to have these fenestra , located under the eye sockets. 12. The main body of the maxilla has no depression around the antorbital fenestra . 13. The supratemporal fenestra has a straight inner edge. 14. Although crocodylians walled over their antorbital fenestra , they still retain an antorbital sinus. 15. In theropod dinosaurs, the antorbital fenestra is the largest opening in the skull. 16. Between dentary, surangular and angular a rather tall triangular mandibular fenestra is present. 17. The skull preserves an antorbital fenestra , or opening in front of the eyes. 18. A real and much smaller external mandibular fenestra is present in front of this. 19. The specimens can be compared only in the area surrounding the right antorbital fenestra . 20. Compared to " Ornithomimus ", the antorbital fenestra is proportionally shorter.
