After an examination of MJ he was not sure exactly what caused the crocodile's death, but noted there were also rocks in his stomach, which he said was normal for the species.
No staff or pets are missing from Koorana Crocodile Farm, so Mr Lever said the origin of the orthopaedic plate is a mystery.
The crocodile was one of thousands living at the central Queensland crocodile farm near Rockhampton.
