Ada Formation

Ada Formation
Stratigraphic range: Late Pennsylvanian
TypeFormation
Location
RegionOklahoma
CountryUnited States
Type section
Named forAda, Pontotoc Co, OK

The Ada Formation is a geologic formation in Oklahoma, within and to west of Ada.[1] It consist mainly of shale with numerous limestone layers which get thinner and eventually disappear to the south, where they are replaced by fine-grained sandstone. Fossils are rare.[2] Disarticulated remains of Eryops, Diasparactus, and Ophiacodon from the Ada Formation represent the first finds of these genera in Oklahoma.[3]

See also

References

  1. ^ Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
  2. ^ USGS. "Ada Group or Ada Formation". Mineral Resources On-Line Spatial Data. Retrieved 2016-02-18.
  3. ^ Kissel, Richard A.; Lehman, Thomas M. (2002). "Upper Pennsylvanian Tetrapods from the Ada Formation of Seminole County, Oklahoma". Journal of Paleontology. 76 (3): 529–545. JSTOR 1307163.


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