Mimbres Valley: Demingian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Murchisoniina - Subulitidae
Hormotoma zelleri Flower 1968
recombined as Eroicaspira zelleri
Gastropoda - Euomphalina - Macluritidae
Bridgeina rotunda Flower 1968
recombined as Macluritella rotunda
Trilobita - Asaphida - Asaphidae
? Aulacoparia huygenae
see common names

Geography
Country:United States State/province:New Mexico County:Grant
Coordinates: 32.9° North, 108.0° West (view map)
Paleocoordinates:12.0° South, 90.4° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Early/Lower Ordovician
Stage:Tremadocian 10 m.y. bin:Ordovician 1
Key time interval:Demingian Trilobite zone: Rossaspis superciliosa
Age range of interval:485.40000 - 482.00000 m.y. ago
Stratigraphy
Geological group:El Paso Formation:José
Stratigraphic resolution:formation
Stratigraphy comments: correlates to high E or F zone of Hintze (1952); later papers say F.
Note: this is NOT the true Jose Formation according to Taylor et al. 2004 (Paleoceanographic events and faunal crises recorded in the Upper Cambrian and Lower Ordovician of west Texas and southern New Mexico; Geological Society of America Field Guide 5).
Lithology and environment
Primary lithology:ooidal,black lithified "limestone"
Lithology description: black oolitic limestones, generally in thin layers, with some black nonoolitic limestone, some black layers with black pebbles, believed by the writer to be algal in orgin
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:56482
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2005-11-18 23:16:17 Last modified:2012-08-24 23:31:33
Access level:the public Released:2005-11-18 23:16:17
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]