Formations beginning with U
77 names, each with a page of its own for the fossils recorded from it. The list is what this site has looked up and cached, not every formation the record holds.
- Uanei
- Uda
- Udurchukan
- Ugod
- Uinta
- Ukalunda
- Ukalunda Beds
- Ukurei
- Ulaan-Ereg
- Ulakhan-Krest
- Ulan Gocho
- Ulan Shireh
- Ulantatal
- Uldza
- Ülgase
- Ulunda Mudstone
- Um Bogma
- Umala
- Umm al-Rua’us
- Umm Himar
- Umzamba
- Union Wash
- Untere Quartzite
- Unterer Travertin
- Unterhonsel
- Uonuma
- Upper Bhuban
- Upper Bringewood
- Upper Calcareous Grit
- Upper Ceratite Limestone
- Upper Chalk
- Upper Coralline Limestone
- Upper Cyrena
- Upper Fezouata
- Upper Flaxley Beds
- Upper Freshwater Molasse
- Upper Freshwater-Molasse
- Upper Greensand
- Upper Haborogawa
- Upper Headon Beds
- Upper Kalibeng
- Upper Kaochaitien
- Upper Koru Series
- Upper Ktaoua
- Upper Lias
- Upper Limestone
- Upper Lopez de Bertodano
- Upper Monok
- Upper Olentangy Shale
- Upper Setul Limestone
- Upper Shangan
- Upper Tiouririne
- Upper Visby
- Upper Visby Beds
- Upper Whitcliffe
- Upper Whitewater
- Uquía
- Urraca
- Urtabulak
- Urumaco
- Urushten
- Usa
- Usarzow Sandstone
- Uscari
- Usili
- USNO
- Uspenskaya
- Usseltal
- Ust-Yudoma
- Ust'kundat
- Ust’Kut
- Ust'Stolbovaya
- Ute
- Utica Shale
- Uyar
- Uzum Bair
- Uzunbulak