Maquoketa Formation, Clermont Member Echinoderms, Upper Mississippi Valley: Maysvillian, Minnesota

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Diplobathrida - Rhodocrinitidae
Archaeocrinus obconicus
Crinoidea - Homocrinida - Homocrinidae
Sygcaulocrinus typus Ulrich 1925
Ectenocrinus raymondi
unclassified
Monocyclic inadunate
Crinoidea - Calceocrinida - Calceocrinidae
Calceocrinus levorsoni
Crinoidea - Porocrinida
Carabocrinus slocomi
Porocrinus fayettensis
Crinoidea - Cupulocrinidae
Cupulocrinus aff. latibrachiatus (Billings 1857)
Crinoidea - Dendrocrinida - Dendrocrinidae
Dendrocrinus sp. Hall 1852
Crinoidea - Plicodendrocrinidae
Dendrocrinus casei Meek 1871
Cyclocystoidea - Cyclocystoididae
Apycnodiscus sp. Smith and Paul 1982
see common names

Geography
Country:United States State/province:Minnesota
Coordinates: 44.0° North, 92.0° West (view map)
Paleocoordinates:18.9° South, 61.1° West
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: 450.4 - 449.8 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Maquoketa Member:Clermont
Stratigraphic resolution:member
Lithology and environment
Primary lithology: "limestone"
Includes fossils?Y
Lithology description: Shaly limestone. Lithology from F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 :99-101.
Environment:carbonate indet.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:23410
Authorizer:S. Holland Enterer:T. Hanson
Modifier:T. Hanson Research group:marine invertebrate
Created:2002-07-14 15:28:58 Last modified:2002-07-14 18:29:02
Access level:the public Released:2002-07-14 15:28:58
Creative Commons license:CC BY
Reference information

Primary reference:
6707. D. R. Kolata, J. C. Brower, and T. J. Frest. 1987. Upper Mississippi Valley Champlainian and Cincinnatian echinoderms. Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35 179-181 [S. Holland/T. Hanson/T. Hanson]