Steubenville Locality (Carboniferous of the United States)

Where: Jefferson County County, Ohio (40.4° N, 80.6° W: paleocoordinates 6.4° S, 17.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Duquense Coal Formation (Conemaugh Group), Stephanian (307.5 - 300.4 Ma)

• Grove and Rothwell (1980, p.1053): Duquense coal, Duquense cyclothem

Environment/lithology: coal

Size class: macrofossils

Collection methods: quarrying, chemical, peel or thin section,

Primary reference: G. G. Grove and G.W. Rothwell. 1980. Mitrospermum vinculum sp. nov., A Cardiocarpalean Ovule From the Upper Pennsylvanian of Ohio. American Journal of Botany 67(7):1051-1058 [W. Stein/J. Kao/J. Kao]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 21263: authorized by Bill Stein, entered by Jenny Kao on 24.06.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Pinopsida
 Cordaitanthales - Cordaitanthaceae