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Mazon Creek (FMNH Gurley collection) (Carboniferous of the United States)

Where: Illinois (41.3° N, 88.4° W: paleocoordinates 4.6° S, 23.4° 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

• Illinois basin
• ironstone concretions

Size class: macrofossils

Preservation: mold/impression

Collected by W. Gurley; 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 122521: authorized by Matthew Clapham, entered by Matthew Clapham on 02.01.2012, edited by Conrad Labandeira and Jered Karr

Creative Commons license: CC BY (attribution)