ammonites
Mazon Creek (K. Daggett coll) (Carboniferous of the United States)

Where: Illinois (41.3° N, 88.2° W: paleocoordinates 3.9° S, 22.6° 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

• deltaic or lagoon, debated whether sea level inundated land or not
• ironstone concretions

Size class: macrofossils

Preservation: mold/impression

Collected by J. Daggett in 1960

• Collected by J. Daggett and is now in the private collection of his brother, K. Daggett

Primary reference: J. Kukalova-Peck and E. S. Richardson. 1983. New Homoiopteridae (Insecta: Paleodictyoptera) with wing articulation from Upper Carboniferous strata of Mazon Creek, Illinois. Canadian Journal of Zoology 61:1670-1687 [M. Clapham/A. Delelli] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 127040: authorized by Matthew Clapham, entered by Amy Delelli on 23.04.2012

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