Gigantophis garstini was a giant prehistoric snake which may have measured more than 10 metres (33 ft), larger than any living species of snake. It once took the mantle of largest snake before Titanoboa, which was discovered in Colombia in 2002. Gigantophis lived approximately 40 million years ago in the southern 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 to 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.