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1 September 2000 THE EARLY MISSISSIPPIAN (OSAGEAN) AMMONOID DZHAPRAKOCERAS (CEPHALOPODA) FROM UTAH
MORRIS S. PETERSEN, DIETER KORN, JÜRGEN KULLMANN
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Abstract

The Mississippian ammonoid genus Dzhaprakoceras Popov, 1965, well known in the eastern hemisphere, is reported from the Delle Member of the Deseret Limestone at Flux and Lakeside Mountains, Tooele County, Utah. This is the first report of the genus in western North America. The ammonoids, D. gordoni n. sp. and D. djaprakense (Librovitch, 1927) occur with mehli—Lower texanus Zone conodonts indicating a middle Osagean (earliest Viséan) age.

MORRIS S. PETERSEN, DIETER KORN, and JÜRGEN KULLMANN "THE EARLY MISSISSIPPIAN (OSAGEAN) AMMONOID DZHAPRAKOCERAS (CEPHALOPODA) FROM UTAH," Journal of Paleontology 74(5), 853-857, (1 September 2000). https://doi.org/10.1666/0022-3360(2000)074<0853:TEMOAD>2.0.CO;2
Accepted: 1 March 2000; Published: 1 September 2000
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