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List of fossiliferous stratigraphic units in Arkansas. Add languages ... This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas ...
List of fossiliferous stratigraphic units in Arkansas This page was last edited on 30 November 2014, at 05:58 (UTC). Text is available under the Creative Commons ...
The Powell Formation or Powell Dolomite is a geologic formation in northern Arkansas, southeast Missouri [3] and Virginia. It contains gastropod , cephalopod , and trilobite fossils dating back to the Ordovician Period .
Paleontology in Arkansas refers to paleontological research occurring within or conducted by people from the U.S. state of Arkansas. The fossil record of Arkansas spans from the Ordovician to the Eocene. [1] Nearly all of the state's fossils have come from ancient invertebrate life. [1] During the early Paleozoic, much
This page was last edited on 19 February 2023, at 19:20 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
The Annona Chalk is a geologic formation in Arkansas, Texas, Louisiana, and Oklahoma. [2] It preserves fossils dating back to the Cretaceous period. The formation is a hard, thick-bedded to massive, slightly fossiliferous chalk. It weathers white, but is blue-gray when freshly exposed. The unit is commercially mined for cement.
The Moorefield Formation, or Moorefield Shale, is a geologic formation in northern Arkansas and eastern Oklahoma that dates to the Meramecian Series of the middle Mississippian. In Arkansas, this formation is generally recognized to have one member, the Ruddell Shale, in the upper Moorefield Formation.
The De Queen Formation, formerly known as the DeQueen Limestone Member [2] is a Mesozoic geological formation located in southwestern Arkansas and southeastern Oklahoma in the United States. Fossil sauropod and theropod tracks have been reported from the formation. [3] [4] It preserves fossils dating back to the Cretaceous period, [5 ...