| Petrolia Formation | |
|---|---|
| Stratigraphic range: Permian | |
 Outcrops of the Petrolia Formation | |
| Type | Formation |
| Unit of | Wichita Group |
| Underlies | Waggoner Ranch Formation |
| Overlies | Nocona Formation |
| Location | |
| Region |  Texas |
| Country |  United States |
The Petrolia Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Wilberns Formation is a geologic formation in Texas. It preserves fossils dating back to the Cambrian period.
The Graham Formation is a geologic formation in Texas. It preserves fossils dating back to the Carboniferous period.
The Pueblo Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Strawn Formation is a geologic formation in Texas. It preserves fossils dating back to the Carboniferous period.
The Del Rio Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
The Atco Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
The Escondido Formation is a geologic formation in Texas and Coahuila, Mexico. It preserves fossils dating back to the Late Cretaceous period.
The Stuart City Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
The Walnut Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
The Grayson Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
The Admiral Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Belle Plains Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Vale Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period. Diplocaulus recurvatus is one of the creatures discovered there.
The Clyde Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Delaware Mountain Formation is a geologic formation in the Delaware Mountains of Texas. It preserves fossils dating back to the Permian period.
The Nocona Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.
The Oakville Formation is a geologic formation in Texas. It preserves fossils dating back to the Neogene period.
The Tanyard Formation is a geologic formation in Texas. It preserves fossils dating back to the Ordovician period.
The Devil's Graveyard Formation is a geologic formation in Texas. It preserves fossils dating back to the Paleogene period.
The Edwards Group is a geologic group in Texas. It preserves fossils dating back to the Cretaceous period.
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