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The invertebrates of Arkansas's Cretaceous sea included clams, echinoids, oysters, and snails. [4] During the Cretaceous, Arkansas was home to Belemnitella, Exogyra, Ostrea, Turritella, and other marine invertebrates in the Arkadelphia area of Clark County. [1] Fish of the same age left behind teeth in the area near Saratoga in Hempstead County.
This list of the prehistoric life of Arkansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arkansas. Precambrian [ edit ]
Fishes of Arkansas. Fayetteville, Arkansas: The University of Arkansas Press. ISBN 1-55728-001-0. "Aquatic Fish Report" (PDF). Arkansas Wildlife Action Plan. Little Rock: Arkansas Game and Fish Commission. 2015
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.
The study of prehistoric fish is called paleoichthyology. A few living forms, such as the coelacanth are also referred to as prehistoric fish, or even living fossils, due to their current rarity and similarity to extinct forms. Fish which have become recently extinct are not usually referred to as prehistoric fish. They were very different from ...
Articulated specimens have confirmed that the rostral denticles and vertebrae belong to the same species. [1] [14] In 1917, Ernst Stromer named the new genus Onchopristis with "G". numidus as the type species. [2] Although the spelling "Onchopristis numidus" is commonly used, it is grammatically incorrect and has been emended to O. numida. [17]
Dunkleosteus is an extinct genus of large arthrodire ("jointed-neck") fish that existed during the Late Devonian period, about 382–358 million years ago.It was a pelagic fish inhabiting open waters, and one of the first apex predators of any ecosystem.
Turseodus is an extinct genus of ray-finned fish found in Late Triassic freshwater sediments of the United States. [ 2 ] [ 3 ] Two species have been described, T. acutus from the Lockatong Formation ( Carnian stage ) of Pennsylvania , and T. dolorensis from the Chinle Formation ( Norian stage) of Colorado .