Where: Greene County, Pennsylvania (39.7° N, 80.5° W: paleocoordinates 3.7° S, 15.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Greene Formation (Dunkard Group), Sakmarian (293.5 - 290.1 Ma)

• " [...] high in the Greene group, Dunkard series [...] " (Vaughn, 1958).

•Notes: The "Green group" today has formational rank and the "Dunkard series" has group status (in the original entry the hierarchy of the lithostratigraphic units was erroneously reversed which has been corrected; TL).

•The age of the Greene Fm. is not well constrained. Vaughn (1958), based on Romer (1952, Ann. Carneg. Mus. 33), states that the "Dunkard series is probably roughly equivalent in age to the Wichita group, lower Permian of Texas." Here, chronostratigraphy is based on correlation chart (fig. 4) in Wellstead (1991, Bull. AMNH 209) (original entry was >>Cisuralian<<; TL).

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; limestone

Size class: macrofossils

Collected by J. J. Burke, W. E. Moran in 1953; reposited in the USNM

Primary reference: P. P. Vaughn. 1958. On the geologic range of the labyrinthodont amphibian Eryops. Journal of Paleontology 32(5):918-922 [J. Alroy/R. Whatley/W. Clyde]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28466: authorized by John Alroy, entered by Robin Whatley on 14.02.2003

Creative Commons license: CC BY (attribution)