Geological units
Sinemurian (Jurassic / Lower Jurassic )
Statherian (Proterozoic / Paleoproterozoic )
Stenian (Proterozoic / Mesoproterozoic )
Telychian (Silurian / Llandovery )
Terreneuvian (Cambrian )
Thanetian (Paleogene / Paleocene )
Tithonian (Jurassic / Upper Jurassic )
Toarcian (Jurassic / Lower Jurassic )
Tonian (Proterozoic / Neoproterozoic )
Tortonian (Neogene / Miocene )
Tournaisian (Carboniferous / Mississippian )
Tremadocian (Ordovician / Lower Ordovician )
Turonian (Cretaceous / Upper Cretaceous )
Upper Cretaceous (Cretaceous )
Upper Devonian (Devonian )
Upper Jurassic (Jurassic )
Upper Ordovician (Ordovician )
Upper Pleistocene (Quarternary / Pleistocene )