| 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 |
| Location | |
| Region | Arkansas, Oklahoma |
| Country | United States |
| Type section | |
| Named by | C.H. Dane |
The Ozan Formation is a geologic formation in Arkansas, Oklahoma and Texas. It preserves fossils dating back to the Cretaceous period.
Paleofauna
Ostracods
- A. ponderosana
- A. dubia
- B. rotunda
- B. ledaforma
- B. rhomboidalis
- B. sphenoides
- B. windhami
- C. fabaformis
- C. bicornis
- C. caudata
- C. communis
- C. costatana
- C. dallasensis
- C. hannai
- C. paraustinensis
- C. plummeri
- C. spoori
- C. verricula
- C. austinensis
- C. crafti
- C. ozanana
- C. spiralia
- C. tollettensis
- C. blakei
- H. bruceclarki
- H. councilli
- H. globosa
- H. insolita
- H. micropunctata
- H. plummeri
- K. cushmani
- K. postporjecta
- L. fletcheri
- M. montuosa
- M. pedata
- M. prothroensis
- O. hannai
- P. texanus
- P. saratogana
- V. arachoides
- V. gapensis
- V. ozanana
- V. reesidei
Avians
Outcrops
-
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
References
- ^ McFarland, John David (2004) . "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). U.S. Geological Survey Press Bulletin (8823).
{{cite journal}}: Missing or empty|title=(help) - ^ 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 – via JSTOR.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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