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Paleogene to Neogene rocks in Kansas consist of river silt, sand, freshwater limestones, and some volcanic ash derived from eruptions in the western United States. Near the beginning of the Paleogene, the Rocky Mountains were formed, as were the streams and rivers heading eastward out from the mountains into Kansas.
Acanthocladia † Acanthocladia guadalupensis † Acanthocladia lepidodendroides Life restoration of the Early Devonian-Permian "spiny shark" Acanthodes † Acanthodes † Acanthopecten † Acanthopecten carboniferous † Achistrum † Achistrum brownwoodensis † Acitheca † Acitheca polymorpha † Aclisina † Acratia † Acratia typica Fossilized teeth of the Permian-Paleocene ...
Most of the Permian rocks in Kansas were deposited in marine environments. [5] This setting was home to algae, brachiopods, bryozoans, fusulinids, ostracods, pelecypods, and trilobites. [9] The brachiopod genus Chonotes was common here. [9] On land, the area around Elmo in Dickinson County was home to more than ten thousand species of insects.
Monument Rocks (also Chalk Pyramids) are a series of large chalk formations in Gove County, Kansas, rich in fossils. The formations were the first landmark in Kansas chosen by the U.S. Department of the Interior as a National Natural Landmark. The chalk formations reach a height of up to 70 ft (21 m) and include formations such as buttes and ...
This list of the prehistoric life of Kansas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Kansas.
As bad days go, it’s hard to top the one 66 million years ago when a space rock the size of Paris slammed into Earth at 45,000 miles per hour. ... By the time the Cretaceous-Paleogene, or K/Pg ...
The Niobrara Chalk has been continuously explored ever since, with specimens being found by H. T. Martin of the University of Kansas and George F. Sternberg, the son of the famous fossil collector Charles H. Sternberg. Much of the best material from the formation is on display at the Sternberg Museum of Natural History in Hays, Kansas.
The Smoky Hill Chalk outcrops in parts of northwest Kansas, its most famous localities for fossils, and in southeastern Nebraska. Large well-known fossils excavated from the Smoky Hill Chalk include marine reptiles such as plesiosaurs , large bony fish such as Xiphactinus , mosasaurs , flying reptiles or pterosaurs (namely Pteranodon ...