Where: Illinois (41.2° N, 88.2° W: paleocoordinates 4.8° S, 23.3° W)
• coordinate stated in text
• 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 David Douglass
• Repository: Lauer Foundation for Paleontology, Science, and Education (Wheaton, Illinois)
Primary reference: V. E. McCoy, J. Wittry, H. Sadabadi and P. Mayer. 2023. A reappraisal of Nemavermes mackeei from the Mazon Creek fossil site expands Carboniferous cyclostome diversity. Journal of Paleontology 97:1116-1132 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 233235: authorized by Matthew Clapham, entered by Matthew Clapham on 25.01.2024
Creative Commons license: CC BY (attribution)
Taxonomic list
|