English: The model is from TriassicSterling who has had this licenced it under cc 0.4 which means i can remix it.

Credit: https://sketchfab.com/TriassicSterling

The measure of a 0.9 ft skull was done using proportions between t-rex and this speculated. If you want me to take the name and the measure out I can do so. The way i got such measurement is by dividing the lengths of t-rex and suskityrannus then looking and doing the math for the skull (which is 9 inches). :)