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Hecker (Golconda Fm.) (Carboniferous of the United States)

Where: Monroe County, Illinois (38.3° N, 90.0° W: paleocoordinates 12.5° S, 32.2° W)

• coordinate based on nearby landmark

When: Golconda Formation, Brigantian (336.0 - 326.4 Ma)

• JA: Brigantian based on age of Golconda Formation

Environment/lithology: marine; lithology not reported

• No geology info given

Primary reference: H. H. Beaver and A. J. Fabian. 1998. Color patterns in Mississippian (Chesterian) blastoids. Journal of Paleontology 72(2):332-338 [J. Alroy/M. Sommers/M. Uhen] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25: authorized by John Alroy, entered by Mike Sommers on 20.11.1998

Creative Commons license: CC BY (attribution)