Brachiopods of lower Cerro Gordo Mbr., Lime Creek Fm., North-Central Iowa (Devonian of the United States)

Where: Iowa (43.0° N, 93.0° W: paleocoordinates 29.2° S, 37.6° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Cerro Gordo Member (Lime Creek Formation), Frasnian (382.7 - 372.2 Ma)

• Member covers both Cyrtospirifer whitneyi and Elita inconsueta zones. This collection covers the former, and consists of a number of samples.

• member-level stratigraphic resolution

Environment/lithology: marine; shale and calcareous shale

• Stratigraphic chart indicates shales and shales with limestone nodules.

Primary reference: J. Day. 1988. The brachiopod succession of the Late Givetian-Frasnian of Iowa. In N. J. McMillan, A. F. Embry, and D. J. Glass (eds.), Devonian of the World, Volume III. Canadian Society of Petroleum Geologists. Calgary, Alberta, Canada 303-325 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35498: authorized by Michael Foote, entered by Michael Foote on 17.12.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

 Productida - Monticuliferidae
 Strophomenida - Douvillinidae
 Strophomenida - Leptostrophiidae
 Strophomenida - Strophodontidae
 Terebratulida - Cranaenidae
 Spiriferinida - Cyrtinidae
 Spiriferida - Cyrtospiriferidae
 Spiriferida - Ambocoeliidae
Ambocoelia sp. Hall 1860
A. n. sp.
 Spiriferida - Mucrospiriferidae
 Pentamerida - Gypidulidae
Gypidula cornuta Fenton and Fenton 1924
 Atrypida - Atrypidae
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Leiorhynchidae
Calvinaria bransoni Stainbrook 1948