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Southern and northeastern Arkansas were likewise covered by the sea into the Cretaceous. Local life left behind many fossils. [4] During the Early Cretaceous, the region of Arkansas southeast of the Ouachita Mountains was submerged by the Gulf of Mexico. [8] The invertebrates of Arkansas's Cretaceous sea included clams, echinoids, oysters, and ...
Fossils of the Carboniferous-Permian bryozoan Archimedes †Archimedes †Archimylacris †Archimylacris venusta – type locality for species †Arkacrinus †Arkacrinus dubius †Arkanites †Arkanites relictus †Arkoceras †Arkoceras exiguum †Asketomorpha – type locality for genus †Asketomorpha grandis – type locality for species ...
Physa is a genus of small, left-handed or sinistral, air-breathing freshwater snails, ... † Physa aridi Mezzalira, 1974 – fossil from Brazil [3]
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 list of the Mesozoic 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 252.17 and 66 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
Arkansas: still no state fossil in Arkansas, though the state designated Arkansaurus as its state dinosaur. [1] District of Columbia: Capitalsaurus is the state dinosaur of Washington D.C., but the District has not chosen a state fossil. Florida: There is no state fossil in Florida, though agatised coral, which is a fossil, is the state stone ...
The Old Spanish Treasure Cave is located on Hwy 59 between Sulphur Springs and Gravette, Arkansas in the northwest corner of the state. It has been a popular tourist attraction since at least 1908. [1] It is still open to the public, with guided tours and other activities such as panning for treasure and finding fossils.