USNM 7087. 100 yds upstream from bridge, bed of Illinois River, 2 miles northeast of Prairie Grove (Carboniferous of the United States)

Where: Washington County, Arkansas (36.0° N, 94.3° W: paleocoordinates 15.4° S, 39.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Basal Limestone Member (Fayetteville Formation), Meramecian (343.0 - 335.5 Ma)

• Goniatites granosus zone

• bed-level stratigraphic resolution

Environment/lithology: black limestone

• black limestone

Size class: macrofossils

Collected by G.H. Girty in 10/03/1908; reposited in the USNM

Primary reference: M., J.r. Gordon. 1969. Revision of some of Girty's invertebrate fossils from the Fayetteville Shale (Mississippian) of Arkansas and Oklahoma - Introduction. United States Geological Survey Professional Paper 606(A):1-7 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 76155: authorized by Pete Wagner, entered by Pete Wagner on 14.11.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Hapsiphyllidae
Zaphrentites arkansanus2 Girty 1910 horn coral
Bivalvia
 Pectinida - Aviculopectinidae
Aviculopecten squamula1 Girty 1910 scallop