Rockford Brick & Tile Quarry: Frasnian, Iowa

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Euomphalina - Palaeotrochidae
Floyda gigantea (Hall and Whitfield 1873)
Day 1987
replaced by Floyda concentrica
Turbonopsis hackberryensis (Webster 1906)
Day 1987
Gastropoda - Naticopsidae
Trachydomia praecursor (Clarke 1885)
recombined as Pseudoplagiothyra praecursor
var. rockfordensis
Gastropoda - Turbinidae
Pycnomphalus kindlei n. sp. Fenton and Fenton 1924
recombined as Antirotella kindlei
see common names

Country:United States State/province:Iowa County:Floyd
Coordinates: 42.1° North, 93.0° West (view map)
Paleocoordinates:30.1° South, 38.2° West
Geographic resolution:outcrop
Period:Devonian Epoch:Late/Upper Devonian
Stage:Frasnian 10 m.y. bin:Devonian 4
Key time interval:Frasnian Brachiopod zone: Cyrtospirifer whitneyi
Age range of interval:382.70000 - 372.20000 m.y. ago
Geological group:Hackberry Formation:Lime Creek Member:Cerro Gordo
Stratigraphic resolution:bed
Stratigraphy comments: U. Frasnian
Lithology and environment
Primary lithology: lithified calcareous "shale"
Includes fossils?Y
Lithology description: nodular calcareous shale
Environment:carbonate indet.
Geology comments: Transgressive-Regressive Cycle IId of Johnson et al. 1985
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Also known as:Belanski’s Station 4. (Note: this includes everything assigned by Fenton & Fenton to Rockford)
Database number:56254
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2005-11-16 08:28:45 Last modified:2019-01-15 19:16:11
Access level:the public Released:2005-11-16 08:28:45
Creative Commons license:CC BY
Reference information

Primary reference:

15182. C. L. Fenton and M. A. Fenton. 1924. The stratigraphy and fauna of the Hackberry stage of the Upper Devonian. Contributions from the Museum of Geology, the University of Michigan 1(1):1-260 [P. Wagner/P. Wagner]

Secondary references:

15160 J. Day. 1987. Revision, distribution, and extinction of the Middle and early Late Devonian archaeogastropod genera Floyda and Turbonopsis. Journal of Paleontology 61(5):960-973 [P. Wagner/P. Wagner]