Why is Dennis Farina so low in the credits?

I watched this last night for the first time in decades and as the opening credits played out I was struck by all the unfamiliar names listed. The only names I knew were Norris, Silva and Remsen. Then, within seconds of the opening credit sequence, there's Dennis Farina! And he has a major part in the film! Why wasn't he listed among all those lesser cast members in the opening credits? I don't recall how well known he was at the time, but I do know that he had a major supporting role (as Jack Crawford) in MANHUNTER the following year. In CODE OF SILENCE he has one of the third or fourth most important parts among the cops. He should have been listed in the opening credits.