Big Hatchet Mountains, near Hachita: Demingian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Euomphalina - Raphistomatidae
Bridgeites discoideus n. gen., n. sp. Flower 1968
see common names

Geography
Country:United States State/province:New Mexico County:Grant
Coordinates: 31.9° North, 108.3° West (view map)
Paleocoordinates:11.9° South, 91.4° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Early/Lower Ordovician
Stage:Tremadocian 10 m.y. bin:Ordovician 1
Key time interval:Demingian
Age range of interval:485.40000 - 478.60000 m.y. ago
Stratigraphy
Geological group:El Paso Formation:Mud Springs
Stratigraphic resolution:formation
Stratigraphy comments: early Arenig; correlates to F zone of Hintze (1952). Now Stairsian.
Lithology and environment
Primary lithology:stromatolitic lithified cherty/siliceous "limestone"
Lithology description: light-weathering stromatolitic limestone, resistant, generally cliff-forming, with chret largely in small nodules and silicified worm trails.
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:56483
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2005-11-19 10:41:24 Last modified:2020-06-17 00:49:51
Access level:the public Released:2005-11-19 10:41:24
Creative Commons license:CC BY
Reference information

Primary reference:

11514. R. H. Flower. 1968. Part I - Some El Paso guide fossils. New Mexico Institute of Mining and Technology Memoir 22(1):1-21 [P. Wagner/P. Wagner/P. Wagner]