Where: Floyd County, Iowa (43.1° N, 93.0° W: paleocoordinates 29.2° S, 37.6° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Cerro Gordo Member (Lime Creek Formation), Frasnian (382.7 - 372.2 Ma)
• horizon based on feet above the base of the Cerro Gordo Member
• bed-level stratigraphic resolution
Environment/lithology: marine; calcareous shale
Collection methods: mechanical,
Primary reference: T. L. De Keyser. 1977. Late Devonian (Frasnian) brachipod community patterns in western Canada and Iowa. Journal of Paleontology 51(1):181-196 [A. Miller/K. Layou/J. Alroy]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 6242: authorized by Arnold Miller, entered by Karen Layou on 11.02.2000, edited by Alycia Stigall
Creative Commons license: CC BY (attribution)
Taxonomic list
Strophomenata | |
Rhynchonellata | |
Schizophoria sp. King 1850 | |
Cyrtospirifer sp. Nalivkin 1924 | |
Ambocoelia sp. Hall 1860 | |
"Pseudatrypa sp." = Pseudoatrypa
| |
Bivalvia | |
Paracyclas elliptica Hall 1843 clam |