The Conemaugh Group is a geologic group in West Virginia, Pennsylvania, Ohio, and Maryland. It preserves fossils dating back to the Carboniferous period.
The Monongahela Formation is a geologic formation in West Virginia, Pennsylvania, Ohio, and Maryland. It preserves fossils dating back to the Carboniferous and Permian periods.
The Cincinnati Group is a geologic group in Kentucky, Ohio and Indiana. It is Upper Ordovician.
The Black River Group is a geologic group in Illinois and West Virginia. It preserves fossils dating back to the Ordovician period.
The Gullane Formation is a geological formation in Scotland. It preserves fossils dating back to the Visean stage.
The Duntulm Formation is a geologic formation in Scotland. It preserves fossils dating back to the Bathonian stage of the Middle Jurassic. It forms part of the Great Estuarine Group. The lithology consists of interbedded fissile mudstone and monospecific oyster beds of Praeexogyra hebridica, with subordinate limestone and calcareous sandstone beds.
The Balclatchie Formation is a geologic formation in Scotland. It preserves fossils dating back to the Ordovician period.
The Kip Burn Formation is a geologic formation in Scotland. It preserves fossils dating back to the Silurian period. This formation is main part of fossil site called Dunside.
The Arbuthnott Group was a geologic group formerly recognised in Scotland but now superseded by the Arbuthnott-Garvock Group. It preserves fossils dating back to the Devonian period.
The Bu Ness Group is a geologic group in Scotland. It preserves fossils dating back to the Devonian period.
The Observatory Group is a geologic group in Scotland. It preserves fossils dating back to the Devonian period.
The Ardwell Group is a geologic group in Scotland. It preserves fossils dating back to the Ordovician period.
The Drummock Group is a geologic group in Scotland. It preserves fossils dating back to the Ordovician period.
The Whitehouse Group is a geologic group in Scotland. It preserves fossils dating back to the Ordovician period.
The Newlands Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period.
The Penkill Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period.
The Priesthill Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period.
The Saugh Hill Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period.
The Stonehaven Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period. Fossils of cryptospores, such as the hilate cryptospore Hispanaediscus lamontii, have been found in this geologic group, along with miospores and other plant fragments.
The Waterhead Group is a geologic group in Scotland. It preserves fossils dating back to the Silurian period.
