Eastern gorilla
Grauer's gorillas and mountain gorillas were previously thought to be two of the three subspecies of one single species, the gorilla ("Gorilla gorilla"). However, genetic research has shown that the two eastern subspecies are far more closely related than the western subspecies: the western lowland gorilla ("G. gorilla gorilla"), which justified the separate classification. The two eastern subspecies are now classified as "G. beringei".
Gigantophis
Gigantophis garstini is an extinct giant snake. Before the Paleocene constrictor genus "Titanoboa" was described from Colombia in 2009, "Gigantophis" was regarded as the largest snake ever recorded. "Gigantophis" lived about 40 million years ago during the Eocene epoch, and in the Paleogene Period within the northern Sahara, where Egypt and Algeria are now located.