Ash Grove Cement Company Quarry (Loc. 2): Khamovnikian, Nebraska

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Dendrocrinida - Cromyocrinidae
Synarmocrinus iatani Strimple 1949
Crinoidea - Dendrocrinida - Catacrinidae
Graffhamicrinus magnijkus Strimple 1947
see common names

Geography
Country:United States State/province:Nebraska County:Cass
Coordinates: 41.0° North, 96.0° West (view map)
Paleocoordinates:0.1° South, 27.3° West
Basis of coordinate:stated in text
Time
Period: Carboniferous Epoch: Pennsylvanian
Stage: Kasimovian 10 m.y. bin: Carboniferous 5
Key time interval: Khamovnikian Conodont zone:  Streptognathodus firmus
Age range of interval: 305.8 - 304.8 m.y. ago
Stratigraphy
Geological group:Lansing Formation:Plattsburg Member:Merriam Limestone
Stratigraphy comments: Early Gzhelian (Missourian), correlative to Khamovnichean of Russian Platform.
Lithology and environment
Primary lithology: "limestone"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Metadata
Database number:124446
Authorizer:J. Alroy Enterer:B. Mamo
Modifier:B. Mamo Research group:marine invertebrate
Created:2012-02-15 15:44:45 Last modified:2012-03-07 21:03:18
Access level:the public Released:2012-02-15 15:44:45
Creative Commons license:CC BY
Reference information

Primary reference:
40104. R. K. Pabian and W. J. Rushlau. 2002. Taphonomic Analysis and Systematic Descriptions of Some Late Pennsylvanian and Early Permian Crinoids from Southeastern Nebraska, Eastern Kansas and Southwestern Iowa. Nebraska Geological Survey Paper Geological Survey Papers 20:1-45 [J. Alroy/B. Mamo/P. Wagner]