Anyone who’s found the SV-POW! Tutorials useful will also like the excellent, detailed osteology posts on Tom Carr’s newish blog Tyrannosauroidea Central. Highly recommended — especially for those, like me, who have a lot to learn about skulls. Composite skull of a subadult Albertosaurus libratus in right lateral view with the major openings and struts labeled. From the first of Carr’s blog entries, linked below.