USGS 15920, Dean Mountain: Brigantian, Arkansas
collected by M. Gordon, D.M. Kinney 1944

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Goniatitida - Neoglyphioceratidae
Neoglyphioceras subcirculare (Miller 1889)
recombined as Lusitanites subcircularis
Cephalopoda - Goniatitida - Girtyoceratidae
Girtyoceras cf. ornatissimum Miller and Youngquist 1948
recombined as Eumorphoceras ornatissimum
Bivalvia - Ostreida - Pterineidae
Caneyella percostata
Bivalvia - Ostreida - Posidoniidae
Posidonia nasuta
see common names

Geography
Country:United States State/province:Arkansas
Coordinates: 35.7° North, 91.8° West (view map)
Paleocoordinates:13.8° South, 34.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Carboniferous Epoch:Mississippian
Stage:Visean 10 m.y. bin:Carboniferous 2
Key time interval:Brigantian Ammonoid zone: Goniatites granosus
Age range of interval:336.30000 - 330.90000 m.y. ago
Stratigraphy
Formation:Fayetteville
Stratigraphic resolution:group of beds
Stratigraphy comments: Fayetteville shale, 1.5-4.2 ft above base.
Lithology and environment
Primary lithology: lithified "shale"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:core
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collectors:M. Gordon, D.M. Kinney Collection dates:1944
Metadata
Database number:157984
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2014-07-13 10:49:45 Last modified:2014-07-13 10:49:45
Access level:the public Released:2014-07-13 10:49:45
Creative Commons license:CC BY
Reference information

Primary reference:
11419. M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322 [J. Alroy/C. Simpson/M. Clapham]