Vascoceras (Greenhornoceras) birchbyi Cobban & Scott from the Greenhorn Limestone (Lower Turonian) of Central Kansas |
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Authors: | DE Hattin |
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Institution: | Department of Geology, Indiana University, Bloomington, Indiana 47405, U.S.A. |
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Abstract: | The Early Turonian ammonite, Vascoceras (Greenhornoceras) birchbyi Cobban & Scott, has been recorded at nine additional localities in Kansas, Colorado and New Mexico. Most significant is discovery of a specimen in Russell County, Kansas, that doubles the known longitudinal range of the species in the U.S. Western Interior. The species occurs in a single, thin, time-parallel limestone bed that apparently was deposited during a peak pulse of the Cenomanian-Turonian transgression. |
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Keywords: | Ammonites Turonian Kansas US Western Interior |
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