Where: Knox County, Illinois (40.7° N, 90.0° W: paleocoordinates 4.8° S, 25.0° W)

• coordinate based on nearby landmark

When: Lake Neosho shale Member (Altamont Formation), Desmoinesian (312.8 - 306.0 Ma)

• JA: all of the Desmoinesian collections in this paper are late Desmoinesian, see title of Swade 1985 in refs

Environment/lithology: marine; shale

Collection methods: core

Primary reference: J. M. Malinky and P. H. Heckel. 1998. Paleoecology and taphonomy of faunal assemblages in gray "core" (offshore) shales in Midcontinent Pennsylvanian cyclothems. Palaios 13(4):311-334 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 91: authorized by John Alroy, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)