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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 ...
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 ...
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]
Physa is a genus of small, left-handed or sinistral, air-breathing freshwater snails, ... † Physa aridi Mezzalira, 1974 – fossil from Brazil [3]
This article contains a list of fossil-bearing stratigraphic units in the state of Arkansas, U.S. Sites. Group or Formation Period
This list of fossil sites is a worldwide list of localities known well for the presence of fossils. Some entries in this list are notable for a single, unique find, while others are notable for the large number of fossils found there.
Hesperornithid fossils have also been unearthed in Arkansas. [114] Some birds found in Canada such as Tingmiatornis and Canadaga were found in areas that were a part of Appalachia. [ 115 ] [ 116 ] Enantiornithine birds are also known from Appalachia, as is the case of Flexomornis from the Woodbine Formation from Texas.
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.