Also known as 98AD10B; Loc. 41

Where: Alaska (68.2° N, 162.9° W: paleocoordinates 32.8° N, 11.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ikalukrok Member (Kuna Formation), Serpukhovian (330.9 - 323.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Kuna Formation. AGE: late Late Mississippian-early Middle Pennsylvanian (Chesterian to Morrowan). Faunal group 2 of Holdsworth and Murchey (1988) and Assemblage Zone 5 (Scharfenbergia tailleurense assemblage) of Murchey (1990). Constraints from conodonts at this locality restrict age to early Chesterian; placed here in the Serpukhovian to avoid stratigraphic orhaning. STRATIGRAPHIC POSITION: Chert-rich upper part of Ikalukrok unit, Kuna Formation. Calcareous radiolarite bed several meters below this sample was collected for conodonts (98AD10A); see table 1 for conodont data from this locality.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, black chert

Size class: macrofossils

Collected by Dumoulin in 2000; reposited in the USNM

• COLLECTOR: J. A. Dumoulin. REPOSITORY: Presumably USNM.

Primary reference: J. A. Dumoulin, A. G. Harris, C. D. Blome and L. E. Young. 2006. Conodont and radiolarian data from the De Long Mountains Quadrangle and adjacent areas, northern Alaska. United States Geological Survey Open-File Report 2006(106):1-174 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 91030: authorized by Austin Hendy, entered by Austin Hendy on 31.08.2009

Creative Commons license: CC BY (attribution)