Also known as 97AK74O

Where: Alaska (68.3° N, 162.2° W: paleocoordinates 32.7° N, 11.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Siksikpuk Formation (Etivluk Group), Serpukhovian (330.9 - 323.2 Ma)

• STRATIGRAPHIC RELATIONS: From the Siksikpuk Formation of the Etivluk Gp. AGE: late Late Mississippian to early Middle Pennsylvanian (Chesterian to Morrowan); placed in Serpukhovian to avoid stratigraphic orphaning. STRATIGRAPHIC POSITION: Sample from Siksikpuk Formation, ~93 ft above base of section and 5 ft above base of unit, from medium-dark-gray to black chert in even to nodular beds 3 to 10 cm thick.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, black, gray chert

Size class: macrofossils

Collected by Kelley in 1997; reposited in the USNM

• COLLECTOR: J. S. Kelley. 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 91040: authorized by Austin Hendy, entered by Austin Hendy on 01.09.2009

Creative Commons license: CC BY (attribution)