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1 March 2017 Some New Late Mississippian Trilobites from Oklahoma and Arkansas
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Abstract
A new late Mississippian trilobite species, Kaskia pitkinensis, new species, is described from the Pitkin Formation of Arkansas. Kaskia pitkinensis, recovered from early Serpukhovian strata, is the youngest species of the Kaskia clade known in the United States. Kaskia c.f. K. wilsoni (Walter, 1924) also is illustrated. Cyrtoproetus kerhini, new species, from the upper Fayetteville Formation of Arkansas is also described. Richterella hindesvillensis Hessler, 1965, from the Hindesville Limestone of Oklahoma, is herein reassigned to the genus Cyrtoproetus Reed, 1943. Cyrtoproetus kerhini, new species, and C. hindesvillensis (Hessler, 1965) are the first known occurrences of Cyrtoproetus in North America.
and David K. Brezinski "Some New Late Mississippian Trilobites from Oklahoma and Arkansas," Annals of Carnegie Museum 84(2), (1 March 2017). https://doi.org/10.2992/007.084.0203
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