MISSISSIPPIAN (LATE OSAGEAN) AMMONOIDS FROM THE NEW PROVIDENCE SHALE MEMBER OF THE BORDEN FORMATION, NORTH-CENTRAL KENTUCKY

David M. Work; CHARLES E. MASON

doi:10.1666/0022-3360(2004)078<1128:MLOAFT>2.0.CO;2

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David M. Work,¹ CHARLES E. MASON²

¹Maine State Museum, 83 State House Station, Augusta 04333-0083, < > david.work@maine.gov
²Department of Physical Sciences, Morehead State University, Morehead, Kentucky 40351, < > c.mason@morehead-st.edu

Abstract

The Mississippian ammonoids Polaricyclus conkini new species, P. ballardensis (Gordon, 1965), Winchelloceras knappi new species, and Cantabricanites? greenei (S. A. Miller, 1892) occur with Gnathodus texanus Zone conodonts near the base of the New Providence Shale Member of the Borden Formation in north-central Kentucky. Both ammonoids and conodonts indicate an early late Osagean (lower Keokuk equivalent) age corresponding to the middle or, more probably, the late Chadian (latest Tournaisian or early Viséan) portion of the Fascipericyclus–Ammonellipsites Zone.

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David M. Work and CHARLES E. MASON "MISSISSIPPIAN (LATE OSAGEAN) AMMONOIDS FROM THE NEW PROVIDENCE SHALE MEMBER OF THE BORDEN FORMATION, NORTH-CENTRAL KENTUCKY," Journal of Paleontology 78(6), 1128-1137, (1 November 2004). https://doi.org/10.1666/0022-3360(2004)078<1128:MLOAFT>2.0.CO;2

Accepted: 1 March 2004; Published: 1 November 2004

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