Some New Late Mississippian Trilobites from Oklahoma and Arkansas

David K. Brezinski

doi:10.2992/007.084.0203

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David K. Brezinski¹

¹[Associate Curator, Adjunct, Section of Invertebrate Paleontology, Carnegie Museum of Natural History] Maryland Geological Survey, 2300 St. Paul Street, Baltimore, Maryland 21218 david.brezinski@maryland.gov

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.

Citation Download Citation

David K. Brezinski "Some New Late Mississippian Trilobites from Oklahoma and Arkansas," Annals of Carnegie Museum 84(2), 173-178, (1 March 2017). https://doi.org/10.2992/007.084.0203

Published: 1 March 2017

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