F-240. Bed 5: Maysvillian - Richmondian, Minnesota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Streptelasmatidae
1 specimen
Rhynchonellata - Orthida - Plaesiomyidae
3 specimens
Rhynchonellata - Orthida - Dalmanellidae
5 specimens
58 specimens
Strophomenata - Strophomenida - Sowerbyellidae
108 specimens
Strophomenata - Strophomenida - Strophomenidae
43 specimens
see common names

Geography
Country:United States State/province:Minnesota County:Fillmore
Coordinates: 43.8° North, 92.0° West (view map)
Paleocoordinates:17.5° South, 115.6° West (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Ordovician Epoch: Late Ordovician
Stage: Katian 10 m.y. bin: Ordovician 5
Key time interval: Maysvillian - Richmondian Graptolite zone:  Amplexograptus manitoulinensis
Age range of interval: 450.2 - 445.5 m.y. ago
Stratigraphy
Geological group:Maquoketa Formation:Scales Member:Elgin
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified cherty/siliceous "limestone"
Secondary lithology:gray silty,cherty/siliceous dolomite
Lithology description: Lithosome II (Elgin Member) Limestones, sublithographic, in 1- to 2-inch beds, cherty, fossiliferous, alternating with shaly, cherty gray dolomite in 3- to 5-inch beds; limestone beds contain the Thaerodonta-Onniella community-48-55
Environment:shallow subtidal indet. Tectonic setting:cratonic basin
Geology comments: "biomicrite alternating with unfossiliferous shale. (shaly dolos and siliceous sh[illeg.] beds. shallow water (prob deeper than Parker's Maquoketa). stable craton, interior. BA4"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Taxonomic list comments:"T. N. Bayer, 1967. Repetitive benthonic community in the Maquoketa Fm. (Ord.) of MN" J. Paleo. 41:417-422"
Metadata
Database number:192175
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2018-03-14 17:07:53 Last modified:2025-02-22 15:12:02
Access level:the public Released:2018-03-14 17:07:53
Creative Commons license:CC0
Reference information

Primary reference:
17051. T. N. Bayer. 1967. Repetitive benthonic community in the Maquoketa Fm. (Ordovician) of Minnesota. Journal of Paleontology 41(2):417-422 [P. Wagner/P. Wagner/P. Wagner]