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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 of Arkansas was covered ...
Oklahoma was a terrestrial environment for most of the ensuing Mesozoic era. [3] The Late Triassic Dockum Group of western Oklahoma preserved remains of archosaurs and temnospondyls, although its fossil record is restricted to a narrow region of the panhandle and is far sparser than the equivalent records in Texas, New Mexico, and Arizona. [98]
This article contains a list of fossil-bearing stratigraphic units in the state of Oklahoma, U.S. Sites. Group or Formation ... Jefferson City Formation: Ordovician:
Fossil of the Cambrian-Middle Devonian trilobite Cheirurus †Cheirurus †Chonetes †Chonetes mesoloba †Cladochonus †Cleiothyridina †Cleiothyridina orbicularis †Clepsydrops; Cliona †Colobomycter – type locality for genus †Colobomycter pholeter – type locality for species †Composita †Composita mexicana †Composita rotunda
The Ouachita Mountains (/ ˈ w ɒ ʃ ɪ t ɔː /), simply referred to as the Ouachitas, are a mountain range in western Arkansas and southeastern Oklahoma.They are formed by a thick succession of highly deformed Paleozoic strata constituting the Ouachita Fold and Thrust Belt, one of the important orogenic belts of North America. [3]
This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites. Group or Formation Period
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 ...
Arkansas, Oklahoma: Country: United States: Type section; ... The Hartshorne Formation is a geologic formation in Arkansas and Oklahoma. It preserves fossils dating ...