Bed C. Clear Creek, along south bank and in bed of intermittent stream (Devonian of the United States)

Where: Union County, Illinois (37.5° N, 89.4° W: paleocoordinates 38.3° S, 38.2° W)

• outcrop-level geographic resolution

When: Icriodus latericrescens latericrescens conodont zone, St. Laurent Formation, Givetian (387.7 - 382.7 Ma)

• = Polygnathus hemiansatus conodont zone.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

• Figure 2 symbols indicate marly limestone

Size class: macrofossils

Primary reference: G. H. Fraunfelter. 1973. Mollusca from the Lingle and St. Laurent Limestones (Middle Devonian) of southern Illinois and southeastern Missouri. Southern Illinois Studies 11:1-44 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157345: authorized by Pete Wagner, entered by Pete Wagner on 13.06.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Hyolitha
 Hyolithida - Hyolithidae
Lophophorata
 Tentaculitida - Tentaculitidae
Bivalvia
 Pectinida - Aviculopectinidae
 Pectinida - Pterinopectinidae
 Ostreida - Pterineidae
"Leiopteria laevis" = Leptodesma (Leiopteria) oyster
 Carditida - Crassatellidae
 Modiomorphida - Modiomorphidae
Modiomorpha concentrica Conrad 1838 clam
? Goniophora "sp. 1" Phillips 1848 clam
 Trigoniida - Myophoriidae
Gastropoda
 Euomphalina - Platyceratidae
"Platyceras (Platyceras) fornicatum" = Spinyplatyceras fornicatum, "Platystoma (Platystoma) lineata" = Platyostoma lineata, Devononema typicum n. gen. n. sp.
"Platyceras (Platyceras) fornicatum" = Spinyplatyceras fornicatum Hall 1862 snail
Platyceras (Platyceras) n. ssp. fornicatum plurispinum
"Platystoma (Platystoma) lineata" = Platyostoma lineata Conrad 1842 snail
Devononema typicum n. gen. n. sp. Fraunfelter 1973 snail
 Murchisoniina - Eotomariidae
"Bembexia cf. rotalia" = Denayella rotalia
"Bembexia cf. rotalia" = Denayella rotalia Hall 1862 snail