Very detailed I like it a lot. I wonder why birds and some of their ancestors have this bone circular part inside their eye socket.
The sclerotic ring occurs in most vertebrates (fish, amphibians, reptiles, birds) but is lost in mammals and oddly, crocodilians. In dinosaurs, the eye was a immobile flattened dome, the bony ring helped support the shape.
Thanks for the explanation! If the eyes were immobile their head movement must have been very simmilar to birds when they try to focus on a particular thing with a lot of tilting and turning. It must have looked rather funny with bigger dinosaurs. Very interesting.
