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GEOREF RECORD

Pennsylvanian (Atokan) ammonoids from the Magoffin Member of the Four Corners Formation, eastern Kentucky

David M. Work, Charles E. Mason and Darwin R. Boardman
Pennsylvanian (Atokan) ammonoids from the Magoffin Member of the Four Corners Formation, eastern Kentucky
Journal of Paleontology (May 2012) 86 (3): 403-416

Abstract

The Pennsylvanian ammonoids Gastrioceras magoffinense n. sp., Maximites nassichuki n. sp., Dimorphoceratoides adamsi n. sp., Bisatoceras? sp., Phaneroceras chesnuti n. sp., and Christioceratidae gen. indet. occur in the Magoffin Member of the Four Corners Formation in eastern Kentucky. The interval represented by the Magoffin ammonoid fauna should be known as the Gastrioceras magoffinense Assemblage Zone. This overlies the well-known Diaboloceras neumeieri Zone, represented in the Kendrick Shale Member of the Hyden Formation in eastern Kentucky. The Gastrioceras magoffinense Zone correlates to the Diaboloceras varicostatum-Winslowoceras henbesti Zone in the Winslow Member of the Atoka Formation in northwestern Arkansas. Ammonoids and associated conodonts, including Declinognathodus marginodosus and its descendant D. donetzianus, indicate an early Atokan age corresponding to the basal Bolsovian (basal Westphalian C) Substage in western Europe and the Bashkirian-Moscovian Stage boundary interval in eastern Europe and the South Urals.


ISSN: 0022-3360
EISSN: 1937-2337
Coden: JPALAZ
Serial Title: Journal of Paleontology
Serial Volume: 86
Serial Issue: 3
Title: Pennsylvanian (Atokan) ammonoids from the Magoffin Member of the Four Corners Formation, eastern Kentucky
Affiliation: Maine State Museum, Augusta, ME, United States
Pages: 403-416
Published: 201205
Text Language: English
Publisher: Paleontological Society, Lawrence, KS, United States
References: 66
Accession Number: 2012-056729
Categories: Invertebrate paleontologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. strat. cols., 3 plates, 6 tables, sketch map
N37°00'00" - N37°43'00", W83°34'60" - W82°35'60"
Secondary Affiliation: Morehead State University, USA, United StatesOklahoma State University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, The Paleontological Society. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201229
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