Claiborne Formation

{{Short description|Geologic formation in the southern United States}}

{{more citations needed|date=June 2014}}

{{Infobox rockunit

| name = Claiborne Formation

| image = Cladrastis-like sp. (Claiborne Formation, Eocene; w. Tennessee, USA) (49034345168).jpg

| caption = Cladrastis-like sp. (Claiborne Formation, Eocene; w. Tennessee)

| type = Formation

| age = Paleogene

| period = Paleogene

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| namedby = Timothy Abbott Conrad{{cite journal|last1=Conrad|first1=T.A.|title=Observations on the Eocene formation, and descriptions of one hundred and five new fossils of that period, from the vicinity of Vicksburg, Mississippi, with an Appendix|journal=Proceedings of the Academy of Natural Sciences of Philadelphia|date=1847|volume=3|pages=280–282}}

| region = Arkansas, Illinois, Kentucky, and Texas

| country = United States

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File:Arkansas, Louisiana, Mississippian and Alabama stratigraphic column.png

The Claiborne Formation or Claiborne Group is a geologic formation in Arkansas, Illinois, Kentucky, and Texas. It preserves fossils dating back to the Paleogene period .