A tall crest rose from the lacrimal bone in front of each eye, similar to Albertosaurus and Daspletosaurus.
From the en.wikipedia.org
The lacrimal bone was not in contact with the frontal anymore, having been separated from it by the prefrontal bone.
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The lacrimal bone is relatively large.
From the en.wikipedia.org
Maxilla is yellow bone in center, frontal bone is light blue bone at top, and lacrimal bone is barely visible pink bone at center.
From the en.wikipedia.org
The prefrontal bone is a bone separating the lacrimal and frontal bones in many tetrapod skulls.
From the en.wikipedia.org
His description of the lacrimal ducts in the eye was a marked advance on those of his predecessors and he also gave a detailed account of the ethmoid bone and its cells in the nose.