The Turonian is a stage of the Late Cretaceous Epoch. It spans the time between 93.9 and 89.8 Ma (million years ago).
The Turonien was definied by the French paleontologist Alcide d'Orbigny (1802 - 1857), who named it after the city of Tours in the French department of Indre-et-Loire.
| Berriasian | Valanginian | Hauterivian Barremian | Aptian | Albian |
Cenomanian | Turonian | Coniacian Santonian | Campanian | Maastrichtian |