Cannon Falls, Nematopora Bed: Shermanian, Minnesota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Stenolaemata - Cystoporata - Constellariidae
Constellaria varia Ulrich 1893
Stenolaemata - Cryptostomata - Arthrostylidae
Arthroclema armatum Ulrich 1890
Nematopora consueta Bassler 1911
Nematopora ovalis Ulrich 1890
Stenolaemata - Cyclostomata - Crownoporidae
Mitoclema mundulum Ulrich 1890
Stenolaemata - Trepostomata - Aisenvergiidae
Eridotrypa exigua Ulrich 1893
see common names

Geography
Country:United States State/province:Minnesota
Coordinates: 44.5° North, 92.9° West (view map)
Paleocoordinates:18.3° South, 63.0° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 4-5
Key time interval:Shermanian
Age range of interval:457.00000 - 449.80000 m.y. ago
Stratigraphy
Formation:Prosser
Stratigraphy comments: "Nematopora Bed of Trenton Limestone",in Bassler (1911)
Lithology and environment
Primary lithology: "limestone"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some genera
Reason for describing collection:taxonomic analysis
Metadata
Database number:167611
Authorizer:B. Kröger Enterer:B. Kröger
Research group:marine invertebrate
Created:2015-03-26 04:13:10 Last modified:2015-03-26 04:13:10
Access level:the public Released:2015-03-26 04:13:10
Creative Commons license:CC BY
Reference information

Primary reference:
54585. R. S. Bassler. 1911. The early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the United States National Museum 77:1-375 [B. Kröger/B. Kröger]