Also known as St. Clair

Where: Schuylkill County, Pennsylvania (40.7° N, 76.2° W: paleocoordinates 9.4° S, 15.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Llewellyn Formation, Pennsylvanian (323.2 - 298.9 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; micaceous, black, gray, silty, sandy shale

Size class: macrofossils

Preservation: adpression

Collection methods: bulk, surface (float), surface (in situ),

• The material used in this study is deposited in the paleobotanical collection at the Department of Geology, University of Pennsylvania, under the numbers PENN-02 to 347

Primary reference: M. H. Scheihing and H. W. Pfefferkorn. 1980. Morphological variation in Alethopteris (Pteridosperms, Carboniferous) from St. Clair, Pennsylvania, USA. Palaeontographica Abteilung B 172:1-9 [H. Pfefferkorn/H. Pfefferkorn/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34027: authorized by Hermann Pfefferkorn, entered by Amy Kidd on 12.08.2003

Creative Commons license: CC BY (attribution)