Tributary to Kelly River, De Long Mountains, Brooks Range (Carboniferous of the United States)

Where: Alaska (67.6° N, 151.5° W: paleocoordinates 23.7° N, 34.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kogruk Formation (Lisburne Group), Meramecian (345.0 - 336.0 Ma)

• Probably Kogruk Formation

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, calcareous shale

• Blue-black calcareous and siliceous, silty mudstone

Size class: macrofossils

Collected by Kenneth J. Bird

• Repository: University of Alaska

Primary reference: C. K. Chamberlain. 1977. Carboniferous and Permian trilobites from Ellesmere Island and Alaska. Journal of Paleontology 51:758-771 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 132287: authorized by Matthew Clapham, entered by Matthew Clapham on 11.08.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Proetida - Proetidae
Griffithides (Griffithides) megalopos n. sp. Chamberlain 1977 trilobite