The Maidenhead - Cretaceous Mongolia Anomaly is an anomaly linking Maidenhead in the present day to Mongolia during the Cretaceous. Six Velociraptors and two Deinosuchus came through. While the Deinosuchus were taken into the ARC's captivity and put in the Creature Prison, all six of the raptors were returned, but were killed in the past when they tried to kill Becker..