The only paper that exists for Aegisuchus is the paper that described the new animal. That paper includes highly detailed figures that show the fossil anatomy and the negative space anatomy of the fossil. That negative space is occupied by the brain of the big old crocodile. Often the endocasts of fossil animals are hypothetical at best but this endocast of the brain is almost (there is a tiny amount of hypothetical space) entirely enclosed and anatomically correct. Have a look at it for yourself.