Gigantophis garstini was a giant prehistoric snake which may have measured more than 10 metres (33 ft), larger than any living species of snake. Before Titanoboa was discovered in Colombia in 2002, Gigantophis was regarded as the largest snake ever. Gigantophis lived approximately 40 million years ago in the northern Sahara, where Egypt and Algeria are now located.
Jason Head, of the Smithsonian Institution in Washington, D.C., has compared the fossilvertebrae of a Gigantophis to those of the largest modern snakes, and concluded that the extinct snake could grow from 9.3 metres (31 ft) to 10.7 metres (35 ft) in length. If 10.7 metres (35 ft), it would have been more than 10 percent longer than its largest living relatives. This species was once thought to be the largest species of snake in Earths history, but was later replaced by the Titanoboa.