Dierks Limestone

{{Infobox rockunit

| name = Dierks Limestone

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| type = Formation

| period = Aptian

| age = Aptian
~{{fossil range|120|112}}

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| namedfor = Dierks, Howard County, Arkansas

| namedby = Hugh Dismore Miser and Albert Homer Purdue{{cite journal|last1=Miser|first1=H.D.|last2=Purdue|first2=A.H.|title=Gravel deposits of the Caddo Gap and De Queen quadrangles, Arkansas|journal=U.S. Geological Survey Bulletin|date=1919|volume=690|pages=18, 19, 21}}

| region = Arkansas

| country = United States

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| unitof = Trinity Group

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The Dierks Limestone is a geologic formation in Arkansas. It preserves fossils dating back to the Cretaceous period.