Locality 25, Golconda Formation, Perry Co., Indiana (Carboniferous to of the United States)

Where: Perry County, Indiana (38.1° N, 86.5° W: paleocoordinates 12.9° S, 28.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Golconda Formation, Brigantian to Brigantian (336.0 - 327.0 Ma)

• JA: originally entered as "Middle Chester," i.e., Hombergian = Brigantian to Pendleian

• formation-level stratigraphic resolution

Environment/lithology: marine; ooidal, shelly/skeletal, gray, argillaceous grainstone and shale

• golconda fm: light gray to tan, crinoidal, slightly oolitic; granular to crystalline and exhibits numerous fossil fragments on weathered surfaces; interbedded variegated red, olive green, and gray shale, as much as 20 ft. in thickness; chert, dolomite, limonite, and hematite are common minerals; pyrite also occurs.

Primary reference: J. Rodriguez. 1960. Invertebrate Fauna of the Golconda Formation (Middle Chester) of Indiana, Western Kentucky, and Southern Illinois. 1-259 [A. Miller/K. Layou/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7026: authorized by Arnold Miller, entered by Karen Layou on 20.04.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Athyridida - Athyrididae
Composita trinuclea, Cleiothyridina sublamellosa
 Athyridida - Retziidae
Eumetria vera
 Rhynchonellida - Stenoscismatidae
Stenoscisma explanatum
 Spiriferida - Spiriferidae
"Spirifer leidyi" = Anthracospirifer leidyi
"Spirifer leidyi" = Anthracospirifer leidyi Norwood and Pratten 1855