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The location of the state of Arkansas. 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]
This list of the Paleozoic life of Arkansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arkansas and are between 541 and 252.17 million years of age.
This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites. Group or Formation Period
Fossil of the Middle Ordovician-Silurian trilobite Sphaerexochus †Sphaerexochus †Spirifer †Stearoceras †Stigmaria †Stroboceras †Sutherlandia †Tesuquea †Triboloceras – tentative report †Tripteroceroides – tentative report; Trypanites †Tylonautilus †Valhallites †Wilkingia †Zia
The Everton Formation is a geologic formation in northern Arkansas through Missouri, Illinois and Indiana that dates to the middle Ordovician Period. [3] It was named by Ulrich (1907) for exposures found around Everton, Arkansas. Fossils of Conodonts Paraprioniodus costatus and Leptochirognathus quadratus indicate Whiterockian age. [4]
Unusual trees found fossilized in Canada were buried alive 350 million years ago. Scientists say the discovery opens a new window into the history of life on Earth. Rare ancient tree discovery has ...
The Pitkin Formation, or Pitkin Limestone, is a fossiliferous geologic formation in northern Arkansas that dates to the Chesterian Series of the late Mississippian. [4] This formation was first named the "Archimedes Limestone" by David Dale Owen in 1858, but was replaced in 1904. [3]
They could once be found all throughout Arkansas, but had more-or-less vanished by 1920, the Commission said, but there have been 23 confirmed sightings in the state beginning in 2010.