tithonian

Updated: May 4, 2025

Lower Neocomian Lower part of Speeton clay: Part of Wealden beds of Kent, Surrey, Sussex, Hants, and Dorset. In Western France, the Alps, the Carpathians, Northern Italy, and the Apennines, an extensive series of rocks has been described by Continental geologists under the name of Tithonian.

Sir Charles Lyell - The Student's Elements of Geology