Fort Atkinson Limestone Ostracodes of Iowa: Maysvillian, Iowa

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Ostracoda - Palaeocopida - Bolliidae
Quasibollia ridicula (Keenan 1951)
Ostracoda - Palaeocopida - Aechminidae
Ostracoda - Palaeocopida - Soanellidae
Ostracoda - Palaeocopida - Schmidtellidae
Ostracoda - Palaeocopida - Tetradellidae
Ostracoda - Palaeocopida - Euprimitiidae
Ostracoda - Palaeocopida - Leperditellidae
Ostracoda - Palaeocopida - Eridoconchidae
see common names

Geography
Country:United States State/province:Iowa
Coordinates: 42.0° North, 94.0° West (view map)
Paleocoordinates:14.9° South, 118.8° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:basin
Time
Period: Ordovician Epoch: Late Ordovician
Stage: Katian 10 m.y. bin: Ordovician 5
*Period:Late/Upper Ordovician *Local age/stage:Maysvillian
Key time interval: Maysvillian
Age range of interval: 450.2 - 449.6 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Maquoketa Formation:Fort Atkinson Limestone
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: dolomite
Includes fossils?Y
Lithology description: Lithology from C. O. Leverson, A. J. Gerk, R. E. Sloan, & L. A. Bisagno. General section of the Middle and Late Ordovician strata of Northeastern Iowa, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, p.25-39. Edited by R. E. Sloan.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Size of fossils:microfossils
Collection methods and comments
Collection methods:chemical,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:23237
Authorizer:S. Holland Enterer:T. Hanson
Modifier:T. Hanson Research group:marine invertebrate
Created:2002-07-10 19:32:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2002-07-10 19:32:19
Creative Commons license:CC0
Reference information

Primary reference:
6656. F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. In R. E. Sloan (ed.), Minnesota Geological Survey Report of Investigations 35:99-101 [S. Holland/T. Hanson/S. Bruning]