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: Idlewild Member (Lithograph City Formation), Frasnian (382.7 - 372.2 Ma)
• Givetian-Frasnian boundary is within this member, and thought to be just about where this fauna comes in.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; shelly/skeletal packstone and shelly/skeletal reef rocks
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 35488: authorized by Michael Foote, entered by Michael Foote on 17.12.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
"Independatrypa independensis" = Desquamatia (Independatrypa), Variatrypa (Radiatrypa) lineata
"Independatrypa independensis" = Desquamatia (Independatrypa) | |
Strophomenata | |
| |
Strophodonta (Strophodonta) "n. sp. A" Hall 1852 |