Where: Johnson County, Illinois (37.0° N, 88.0° W: paleocoordinates 17.4° S, 34.7° W)

• coordinate estimated from map

When: Tar Springs Formation, Mississippian (358.9 - 323.2 Ma)

• Chester Series of upper Mississippian

Environment/lithology: sandstone and shale

Size classes: mesofossils, microfossils

Preservation: mold/impression, replaced with pyrite

Collection methods: quarrying,

Primary reference: J. R. Jennings. 1973. The morphology of Stigmaria stellata. American Journal of Botany 60(5):414-425 [W. Stein/D. Horvath/D. Horvath]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23960: authorized by Bill Stein, entered by Dylan Horvath on 24.07.2002

Creative Commons license: CC BY (attribution)