The following are known Action Replay Codes for Turok 3: Shadow of Oblivion on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Have Shotgun
80333950 0001

Infinite Grenade Gun Ammo
8133340a 0064

Infinite Life Units
813334FC 0063

Infinite Arrows
81333928 0063

Infinite Shotgun Ammo
81333932 0064

Have a Grenade Launcher
80333954 0001