St. Bonecracker's Prison is a T. rex jail on Teerex Major and is located on the fithiest street on the planet. Mechanical warders guard the T. rex prisoners. Present inmates include Braxus, Fangetta, the former prison governor, and Thickhead McBrick, who were all involved in a plot to steal King Groosum's crown jewels. Teggs and Gipsy were also once sent there. There is a canteen in the prison, a grubby dining hall for use by prison officials, and a library, which was built even though the inmates can't read.