Petrolia Formation
| 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.
Paleontology
The Petrolia Formation has provided a rich vertebrate fauna.[1] Many fossils were originally assigned to the Belle Plains Formation,although this formation is now considered synonymous with the Petrolia Formation.[1] It is regarded as Early Leonardian in age based off of ammonite biostratigraphy.[1] Tit Mountain was once regarded as part of the now defunct Belle Plains Formation.[2]
| Genus | Species | |
|---|---|---|
| Dimetrodon | D.natalis[3]
D.limbatus[3] |
A small species of Dimetrodon.
Large species of Dimetrodon. |
| Secodontosaurus | S. obtusidens[3] | A sphenacodontid. |
| Ophiacodon | O.retroversus[3] | An ophiacodontid. |
| Edaphosaurus | E.cruciger[3] | An edaphosaurid. |
| Eothyris | E.parkeyi[3] | A primitive synapsid. |
| Varanosaurus | V.wichitaensis[3] | A varanopid. |
Chondricthyes
| Genus | Species | Notes |
|---|---|---|
| Orthacanthus | O.platypternus[4] | A xenacanthid. |
| Barbclabornia | B.luederensis[4] | A giant xencanth. |
Amphibia
| Genus | Species | Notes |
|---|---|---|
| Platyhystrix | P.sp[5] | A temnospondyl. |
| Archeria | A.sp.[5] | An embolomere. |
| Trimerorhachis | T.bilobatus[5] | A dvinosaur. |
| Eryops | E.sp.[5] | A temnospondyl. |
Reptiliomorpha
| Genus | Species | |
|---|---|---|
| Diadectes | D.sp.[5] | A diadectid. |
See also
References
- ^ a b c Iii, Nicholas Hotton; Feldmann, Rodney M.; Hook, Robert W.; Dimichele, William A. (2002). "Crustacean-bearing continental deposits in the Petrolia Formation (Leonardian Series, Lower Permian) of north-central Texas". Journal of Paleontology. 76 (3): 486–494. doi:10.1666/0022-3360(2002)076<0486:CBCDIT>2.0.CO;2. ISSN 0022-3360.
- ^ Olson, Everett (1955). "FAUNA OF THE VALE AND CHOZA" (PDF). Internet Archive.
- ^ a b c d e f g Brocklehurst, Neil (2015-11-06). "The early evolution of Synapsida (Vertebrata, Amniota) and the quality of their fossil record". Humboldt University: 300–303. doi:10.18452/17351.
- ^ a b Johnson, Gary (2005). "UNDERDEVELOPED AND UNUSUAL XENACANTH SHARK TEETH FROM THE LOWER PERMIAN OF TEXAS" (PDF). Scispace.
- ^ a b c d e "Tit Mountain, 21". Paleobiology database. 2026.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.