Where: Medfra County, Alaska (63.3° N, 154.5° W: paleocoordinates 2.5° N, 46.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Polygnathus dehiscens conodont zone, Limestone Mountain Formation, Early/Lower Emsian (409.1 - 402.5 Ma)

• On the basis of regional stratigraphic correlations and faunal composition, the host beds appear to be slightly younger than the earliest Emsian (Polygnathus dehiscens Zone) Soda Creek Limestone (Blodgett et al., 2000).

•

•(This would be Polygantuhs gronbergi/P. excavatus zone, or 406-403.5 Ma on Gradstein et al.)

•

•Note also that "Limestone Mountain" is an informal name.

• bed-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

• Cobbled together from multiple taxonomy papers

Primary reference: R. B. Blodgett and D. M. Rohr. 1989. Two new Devonian spine-bearing pleurotomariacean gastropod genera from Alaska. Journal of Paleontology 63(1):47-52 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49107: authorized by Pete Wagner, entered by Pete Wagner on 08.04.2005, edited by Sarah Kolbe

Creative Commons license: CC BY (attribution)