Where: Grundy County, Illinois (41.3° N, 80.2° W: paleocoordinates 6.5° S, 17.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Francis Creek Shale Member (Carbondale Formation), Westphalian D (311.4 - 306.9 Ma)

Environment/lithology: deltaic; lithified, concretionary, ferruginous mudstone

Size class: macrofossils

Preservation: mold/impression

Collected by Piecko; reposited in the ROM

Primary reference: O. Bethoux and J. Kukalova-Peck. 2011. Royal Ontario Museum -Species list. [M. Clapham/J. Karr] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124836: authorized by Matthew Clapham, entered by Jered Karr on 25.02.2012

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)