Also known as Mazon Creek

Where: Illinois (41.3° 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 Walter Dabasinskas

Primary reference: F. M. Carpenter. 1967. Studies of North American Carboniferous Insects: 5. Paleodictyoptera and Megasecoptera from Illinois and Tennessee, with a Discussion of the Order Sypharopteroidea. Psyche 74:58-83 [C. Labandeira/C. Labandeira/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122500: authorized by Matthew Clapham, entered by Matthew Clapham on 31.12.2011

Creative Commons license: CC BY (attribution)