Stark Shale Member, Richfield, Sarpy County, NE (Schram, 1984, Location 3) (Carboniferous of the United States)

Where: Sarpy County County, Nebraska (41.1° N, 96.2° W: paleocoordinates 0.9° S, 27.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Stark Shale Member (Dennis Formation), Missourian (306.0 - 303.7 Ma)

• member-level stratigraphic resolution

Environment/lithology: offshore; fine-grained, black shale

• "black shales seem to represent a deep-water phase of a transgressive-regressive sequence"
• the black shales are "fine grained and sheety in form, with bedding slabs not particularly thin or paperlike"

Size class: macrofossils

Preservation: mold/impression, adpression, original carbon, replaced with pyrite

Collection methods: quarrying,

Primary reference: F. R. Schram. 1984. Upper Pennsylvanian arthropods from black shales of Iowa and Nebraska. Journal of Paleontology 58(1):197-209 [J. Alroy/D. Lamb/D. Lamb]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 50934: authorized by John Alroy, entered by David Lamb on 24.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• In addition to the arthropods, the shale contains abundant conodonts and fish spines
Show authors, comments, and common names
Malacostraca
 Stomatopoda - Gorgonophontidae
Gorgonophontes peleron
Gorgonophontes peleron Schram 1984 mantis shrimp
Euchelicerata
 Eurypterida - Mycteropidae
Mycterops whitei
Mycterops whitei Schram 1984 eurypterid