Locality 12. North side of creek, 8 miles southwest of Vienna (Carboniferous of the United States)

Also known as W.M. 18-29. Stuart Weller 1918

Where: Johnson County, Illinois (37.4° N, 89.0° W: paleocoordinates 13.1° S, 31.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Glen Dean Formation (Okaw Group), Chesterian (339.4 - 318.1 Ma)

• Uppermost Hombergian substage

• formation-level stratigraphic resolution

Environment/lithology: ooidal limestone

Size class: macrofossils

Reposited in the FMNH

Primary reference: M.L. Thein and M.H. Nitecki. 1974. Chesterian (Upper Mississippian) Gastropoda of the Illinois basin. Fieldiana: Geology, New Series 34:1-238 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 59824: authorized by Pete Wagner, entered by Pete Wagner on 15.04.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Tergomya
 Archinacellida - Metoptomatidae
Gastropoda
 Murchisoniina - Gosseletinidae
"Borestus chesterensis" = Salterospira chesterensis
"Borestus chesterensis" = Salterospira chesterensis Meek and Worthen 1860 snail
 Murchisoniina - Porcelliidae
Porcellia chesterensis Thein and Nitecki 1974 snail
 Murchisoniina - Eotomariidae
Euconospira sturgeoni Thein and Nitecki 1974 snail
 Cyrtoneritida - Orthonychiidae
"Platyceras (Orthonychia) chesterense" = Orthonychia chesterense
"Platyceras (Orthonychia) chesterense" = Orthonychia chesterense Meek and Worthen 1867 snail
var. 1 and var. 2
 Bellerophontida - Bellerophontidae
"Knightites (Cymatospira) welleri" = Cymatospira welleri Thein and Nitecki 1974 snail
Patellilabia chesterensis Thein and Nitecki 1974 snail
 Euomphalina - Platyceratidae
 Caenogastropoda - Goniasmatidae
Platyzona "sp. 2" Knight 1945 snail
 Neritoidea - Naticopsidae