What is the difference between a postorbital bar and fully enclosed eye sockets?     What is a bony ear tube?  Where is it located?

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter32: Deuterostomes: Vertebrates And Their Closest Relatives
Section32.5: Gnathostomata: The Evolution Of Jaws
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What is the difference between a postorbital bar and fully enclosed eye sockets?

 

 

What is a bony ear tube?  Where is it located?

 

 

Which larger group of primates has bony ear tubes and which does not?

 

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