Where: Illinois (41.2° N, 88.2° W: paleocoordinates 4.7° S, 23.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Francis Creek Shale Member (Carbondale Formation), Westphalian D (309.8 - 307.5 Ma)

• group of beds-level stratigraphic resolution

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

Size class: macrofossils

Preservation: mold/impression, concretion

Collected by M. Fischer; reposited in the FMNH

Primary reference: A. L. Melander. 1903. Some additions to the Carboniferous terrestrial arthropod fauna of Illinois. Journal of Geology 11(2):178-198 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 152111: authorized by Matthew Clapham, entered by Matthew Clapham on 07.11.2013

Creative Commons license: CC BY (attribution)