Where: Illinois (39.2° N, 94.5° W: paleocoordinates 3.2° S, 27.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kansas City Group, Kasimovian (307.0 - 303.7 Ma)

• Missourian

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Collected by W.J. Parrish; reposited in the FMNH

• In Walker Museum, University of Chicago (now Field Museum)

Primary reference: F. B. Plummer and G. Scott. 1937. Upper Paleozoic ammonites in Texas. The University of Texas Bulletin 3701:1-516 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131564: authorized by Matthew Clapham, entered by Matthew Clapham on 26.07.2012

Creative Commons license: CC BY (attribution)