Aa-3. Exposure along US 50 southwest (Carboniferous of the United States)

Where: Athens County, Ohio (39.3° N, 82.1° W: paleocoordinates 7.4° S, 18.9° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Streptognathodus gracilis conodont zone, Portersville Member (Glenshaw Formation), Missourian (306.0 - 303.7 Ma)

• Originally given as Conemaugh formation, Portersville member

• member-level stratigraphic resolution

Environment/lithology: marine; nodular limestone

• "Limestone, in irregular nodules full of fossils"

Size class: macrofossils

Collection methods: bulk, mechanical

Primary reference: R. D. Hoare and M. T. Sturgeon. 1980. The Pennsylvanian pseudozygopleurid gastropod genus Gamizyga n. gen. from Ohio and West Virginia. Journal of Paleontology 54(1):159-187 [P. Wagner/P. Wagner/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 183165: authorized by Pete Wagner, entered by Pete Wagner on 06.12.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Zygopleuroidea - Pseudozygopleuridae
"? Gamizyga (Plocezyga) cancellata" = Ploceozyga (Hyphantozyga) cancellata, "? Gamizyga (Plocezyga) ornata" = Plocezyga ornata
"? Gamizyga (Plocezyga) cancellata" = Ploceozyga (Hyphantozyga) cancellata Mark 1912 snail
"? Gamizyga (Plocezyga) ornata" = Plocezyga ornata Mark 1912 snail