You searched for: Place Ladney-Lambton Site, Sarnia area. Approximately five km south of Courtright, west of Greenfield Road and south of Old Springs line. Remove constraint Place: Ladney-Lambton Site, Sarnia area. Approximately five km south of Courtright, west of Greenfield Road and south of Old Springs line. Topic Magnoliopsida Remove constraint Topic: Magnoliopsida