Its not 10000% accurate I know, and no feathers- but Its been annoying me that people draw my carcharodontosaurus character with a T-rex skull/head shape, when the two dinosaurs are completely different, especially in cranium size. Its just a very basic guide. The front ones such because dinosaurs from the front are so hard to draw- especially if you only have skulls to look at, but they give you the basic gist

references: http://www.paleo.square7.ch/IMG/T.%.....ll_diagram.jpg
https://upload.wikimedia.org/wikipe.....ll_diagram.jpg
http://cdn.slashgear.com/wp-content...../F7.large_.jpg
https://lh6.googleusercontent.com/-.....ycarchylol.png