D1494a-CO. Stargo Spring, Monitor Range.: Rangerian, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhombifera - Pleurocystitidae
Plethoschisma grandis Sprinkle 1974
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 38.9° North, 116.5° West (view map)
Paleocoordinates:5.6° South, 81.9° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Early/Lower Ordovician
Stage:Floian 10 m.y. bin:Ordovician 2
Key time interval:Rangerian Brachiopod zone: Paralenorthis-Orthidiella
Age range of interval:470.00000 - 469.10000 m.y. ago
Stratigraphy
Geological group:Pogonip Formation:Antelope Valley
Stratigraphic resolution:group of beds
Stratigraphy comments: Sponge beds occur at the boundary between the Orthidiella and Anomalorthis zones.
Lithology and environment
Primary lithology: lithified "limestone"
Lithology description: wackestone/packstone/mudstone with shale interbeds
Environment:carbonate indet.
Geology comments: uppermost slope of a carbonate platform or outer shelf
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Taxonomic list comments:trilobites, brachiopods, gastropods, and echinoderms reported to be present, but not listed
Metadata
Database number:195515
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:J. Marcot Research group:marine invertebrate
Created:2018-08-10 23:06:29 Last modified:2023-09-05 14:50:19
Access level:the public Released:2018-08-10 23:06:29
Creative Commons license:CC BY
Reference information

Primary reference:
66547. J. Sprinkle. 1974. New Rhombiferan Cystoids from the Middle Ordovician of Nevada. Journal of Paleontology 48(6):1174-1201 [P. Wagner/P. Wagner]