Named after the village of Piacenzia (Italy).

Derived from Zancla, the pre-Roman name for the town of Messina in Sicily (Italy).

Named after the town of Messina (Sicily, Italy).

Named after the city of Tortona (Piemont, Italy).

Named after the town of Serravalle Scrivia (Italy).

Named after the Langhe area north of Ceva (Italy).

Named after the town of Bordeaux = Burdigala(Gironde, France).

Named after the Aquitaine region (France).

Named after the Chatti tribe (Deutschland).

Named after the Rupel river (Belgium).

Named after the village of Priabona (Vicenza, Italy).

Named after the village of Barton-on-Sea (Hampshire, UK).

Named after the town of Paris = Lutetia (France).

Named after the village of Ypres = Ieper(Belgium).

Named after the Isle of Thanet (Kent, UK).

Named after the Zealand island (Denmark).

Named after the Latin name for Denmark.

Named after the Champagne de Saintonge (Charentes, France), near Cognac.

Named after the former province of Saintonge (Charentes, France).

Named after the town of Cognac (Charente-Maritime, France), where the historical stratotype lies.

Names after the town of Tours = Turonia (Indre-et-Loire, France)

Named atfer the town of Le Mans (Sarthe, France).

Named after the Aube region (France).

Named after the town of Apt (Vaucluse, France).

Named after the village of Barrême (Alpes-de-Haute-Provence, France).

Named after the village of Hauterive (NE), NE Neuchâtel.

Named after the village of Valangin (NE), at the upper end of the Gorges du Seyon (see also inventory of Swiss geotopes n°245).

Named after the village of Berrias (Ardèche, France).

Named derived from the Greek mythology: Tithon was the son of Laomedon of Troy, who fell in love with Eos, Greek goddess of the dawn (thus prefiguring the Cretaceous system).

Named after the town of Kimmeridge on the Dorset coast (UK). The Kimmeridge Clay Formation is the main oil source rock in the North Sea petroleum province.

Named after the city of Oxford (UK).

Named derived from the old spelling of Kellaways Bridge (Wiltshire, UK), 2 miles NE Chippenham.

Named after the town of Bath (Somerset, UK), near Bristol. The city itself is largely built of Bath Stone, a bright white oolithic limestone that is quarried nearby.

Named after the town of Bayeux (Calvados, France) in Normandy.

Named after the town of Aalen (Baden-Württemberg, S Germany), 100 km E Stuttgart.

Named after the town of Thouars (Deux-Sèvres, France), S Saumur. The protected stratotype lies in an old quarry.

Named after the village of Pliensbach (Baden-Württemberg, S Germany), 30 km E Stuttgart.

Named after the town of Sémur-en-Auxois (Côte-d'Or, France).

Named after the town of Hettange (Moselle, N France), just south of the border with Luxembourg,

Rhaetian Alps (Switzerland, Austria and Italy)

Named atfer the Carnic Alps zwischen Austria and Italy (East Tyrol, Carinthia, Friuli and Veneto).

Named after the Ladini people of the Dolomites, N Italy.

Named after the Enns (= Anisus) River at Grossreifling (Austrian Alps).

Named after the Capitan Reef in the Guadalupe Mountains (Texas, USA).

Named after the Word Formation (Word Ranch, Glass Mountains) of the North American Permian Basin.

Named after the Road Canyon Member of the Word Formation (Texas, USA).

Named after the town of Kungur (Russia), near Perm.

Named after the town of Artinsk = Arti (Russia), S Perm.

Named after the Sakmara River (Russia).

Named after the Assel River, southern Ural Mountains (Kazakhstan / Bashkortostan).

Named after the town of Frasne (France), near Tournay.

Named after the town of Givet (Ardennes, France).

Named after the Eifel region (Prusse rhénane)

Named after the town of Lochkhow (Bohemia).

Named after the Ediacara Hills (South Australia).

From krýos and génesis (Greek), meaning "cold" resp. "birth".

From tóno (Greek), meaning "stretch".

From stenós (Greek), meaning "narrow".

From éktasis (Greek), meaning "extension".

From kálymma (Greek), meaning "cover".

From statherós (Greek), meaning "stable, firm".

From oroseirá (Greek), meaning "mountain range".

From rhýax (Greek), meaning "stream of lava".

From sídēros (Greek), meaning "iron".