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Okaw - Glen Dean, Johnson County, Illinois, USA

Group	Okaw
Formation	Glen Dean
Age:	339 - 318 Ma Carboniferous
Interval	Chesterian
Lithology	limestone
Number of Collections	1
Number of Occurrences	11

Recorded Sample Locations

Location	Region	Stratigraphic Name
Locality 12. North side of creek	Johnson County, Illinois, USA	Okaw - Glen Dean

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Bellerophon chesterensis species	7	Animalia : Mollusca : Gastropoda : Bellerophontidae : Bellerophon : *Bellerophon chesterensis*	339.4 - 318.1 Ma Carboniferous
Cymatospira welleri species	7	Animalia : Mollusca : Gastropoda : Bellerophontida : Bellerophontidae : Cymatospira : *Cymatospira welleri*	339.4 - 318.1 Ma Carboniferous
Patellilabia chesterensis species	7	Animalia : Mollusca : Gastropoda : Bellerophontidae : Patellilabia : *Patellilabia chesterensis*	339.4 - 318.1 Ma Carboniferous
Orthonychia chesterense species	7	Animalia : Mollusca : Gastropoda : Cyrtoneritimorpha : Orthonychiidae : Orthonychia : *Orthonychia chesterense*	339.4 - 318.1 Ma Carboniferous
Platyceras subrotundum species	7	Animalia : Mollusca : Gastropoda : Platyceratidae : Platyceras : *Platyceras subrotundum*	339.4 - 318.1 Ma Carboniferous
Euconospira sturgeoni species	7	Animalia : Mollusca : Gastropoda : Pleurotomariida : Gosseletinidae : Euconospira : *Euconospira sturgeoni*	339.4 - 318.1 Ma Carboniferous
Pleurotomaria chesterensis species	7	Animalia : Mollusca : Gastropoda : Pleurotomariida : Gosseletinidae : Salterospira : *Pleurotomaria chesterensis*	339.4 - 318.1 Ma Carboniferous
Porcellia chesterensis species	7	Animalia : Mollusca : Gastropoda : Leveillia : *Porcellia chesterensis*	339.4 - 318.1 Ma Carboniferous
Platyzona sp. genus	6	Animalia : Mollusca : Gastropoda : Goniasmatidae : *Platyzona*	339.4 - 318.1 Ma Carboniferous
Naticopsis (Naticopsis) sp. subgenus	6.3	Animalia : Mollusca : Gastropoda : Naticopsidae : Naticopsis : *Naticopsis (Naticopsis)*	339.4 - 318.1 Ma Carboniferous
Lepetopsis chesterensis species	7	Animalia : Mollusca : Tergomya : Archinacellida : Metoptomatidae : Lepetopsis : *Lepetopsis chesterensis*	339.4 - 318.1 Ma Carboniferous

References

Thein M.L., Nitecki M.H. (1974) Chesterian (Upper Mississippian) Gastropoda of the Illinois basin, Fieldiana: Geology, New Series 34, 1-238

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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