The Titanomachy is a lost epic of the cosmological struggle between the Greek gods and their parents, the Titans, and is a probable source of the Prometheus myth. along with the works of Hesiod. Its reputed author was anciently supposed to have lived in the 8th century BC, but M. L. West has argued that it can't be earlier than the late 7th century BC. Presumably included in the Titanomachy is the story of Prometheus, himself a Titan, who managed to avoid being in the direct confrontational cosmic battle between Zeus and the other Olympians against Cronus and the other Titans (although there is no direct evidence of Prometheus' inclusion in the epic). M. L. West notes that surviving references suggest that there may have been significant differences between the Titanomachy epic and the account of events in Hesiod; and that the Titanomachy may be the source of later variants of the Prometheus myth not found in Hesiod, notably the non-Hesiodic material found in the Prometheus Bound of Aeschylus.