The Ozan Formation is a geologic formation in Arkansas, Oklahoma[1] and Texas. It preserves fossils dating back to the Cretaceous period.
| Ozan Formation | |
|---|---|
| Stratigraphic range: Cretaceous | |
_(Ozan_Formation,_Upper_Cretaceous;_eastern_Texas,_USA)_1.jpg) Fossil ammonites from the Ozan Formation | |
| Type | Formation |
| Sub-units | Austin Group |
| Underlies | Annona Chalk |
| Overlies | Austin Chalk, Brownstown Marl |
| Thickness | 150 to 250 feet[1] |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named by | C.H. Dane[2] |
Paleofauna
edit- A. ponderosana[3]
- A. dubia[3]
- B. rotunda[3]
- B. windhami[3]
- C. fabaformis[3]
- C. bicornis[3]
- C. caudata[3]
- C. communis[3]
- C. costatana[3]
- C. dallasensis[3]
- C. hannai[3]
- C. paraustinensis[3]
- C. plummeri[3]
- C. spoori[3]
- C. verricula[3]
- C. austinensis[3]
- C. blakei[3]
- L. fletcheri[3]
- O. hannai[3]
- P. texanus[3]
- P. saratogana[3]
- V. reesidei[3]
Outcrops
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Annona Chalk overlying Ozan Formation at what is now called White Cliffs Natural Area, with the Little River in the foreground, Howard County, AR (c. 1910)
Another view of the same location (c. 1902)
See also
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References
edit- 1 2 McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 29. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-12.
- ↑ Dane, C.H. (10 September 1926). "Oil-bearing formations of southwestern Arkansas". U.S. Geological Survey Press Bulletin (8823).
- 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Collins, Jr., Robert J. (June 1960). Stratigraphy and Ostracoda of the Ozan, Annona, and Marlbrook Formations of southwestern Arkansas (PhD). Louisiana State University and Agricultural and Mechanical College.
- ↑ Bell, Alyssa; Irwin, Kelly J.; Davis, Leo Carson (2015). "Hesperornithiform birds from the Late Creaceous (Campanian) of Arkansas, USA". Transactions of the Kansas Academy of Science. 118 (3/4): 219–229. doi:10.1660/062.118.0305. JSTOR 24887762. S2CID 83921936.
- ↑ Rempert, Trevor; Martens, Brennan; Vinkeles Melchers, Alexander; Rempert, Ashley. "New remains of the mosasaur Globidens alabamaensis from the North Sulphur River of Texas". The Journal of Paleontological Sciences. 11: 1–7. doi:10.5281/zenodo.13324298.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 19 August 2022. Retrieved 17 December 2021.
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