Gaither Mountain; USGS 8623: Morrowan, Arkansas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Bactritida - Bactritidae
? Bactrites gaitherensis Gordon 1964
? Bactrites redactus Gordon 1964
Cephalopoda - Prolecanitida - Pronoritidae
Stenopronorites arkansiensis (Smith 1896)
recombined as Pseudopronorites arkansiensis
(1 measurement)
Cephalopoda - Goniatitida - Bisatoceratidae
Bisatoceras secundum Miller and Moore 1938
(2 measurements)
Cephalopoda - Goniatitida - Delepinoceratidae
Proshumardites morrowanus Gordon 1964
(1 measurement)
Cephalopoda - Goniatitida - Reticuloceratidae
Pygmaeoceras solidum Gordon 1964
(3 measurements)
Cephalopoda - Goniatitida - Gastrioceratidae
Gastrioceras fittsi Miller and Owen 1944
recombined as Gastrioceras (Lissogastrioceras) fittsi
Cephalopoda - Goniatitida - Glaphyritidae
Glaphyrites morrowensis (Miller and Moore 1938)
Glaphyrites depressus Gordon 1964
Glaphyrites oblatus Miller and Moore 1938
recombined as Syngastrioceras oblatum
Cephalopoda - Goniatitida - Schistoceratidae
Gastrioceras branneri Smith 1896
recombined as Branneroceras branneri
(2 measurements)
Cephalopoda - Nautilida - Liroceratidae
Coelogasteroceras gracile Gordon 1964
(1 measurement)
Cephalopoda - Pseudorthocerida - Pseudorthoceratidae
Pseudorthoceras knoxense (McChesney 1859)
Mooreoceras normale Miller et al. 1933
synonym of Pseudorthoceras knoxense
? Dolorthoceras sp. Miller 1931
see common names

Geography
Country:United States State/province:Arkansas County:Boone
Coordinates: 36.2° North, 93.2° West (view map)
Paleocoordinates:8.9° South, 31.0° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Carboniferous Epoch:Early/Lower Pennsylvanian
Stage:Bashkirian 10 m.y. bin:Carboniferous 4
Key time interval:Morrowan
Age range of interval:318.10000 - 314.60000 m.y. ago
Stratigraphy
Formation:Witts Springs
Stratigraphic resolution:group of beds
Stratigraphy comments: The Hale formation and the Bloyd shale can be differentiated and most of their subdivisions recognized as far southeast as the northwest part of Newton County, in the vicinity of Compton. Southeast of this area, there is a gradual increase in sand content and a thickening of the Marrow section. In this region the upper part of the Hale formation and the various subdivisions recognized in Washington County cannot be differentiated. East of Compton, therefore, or for practical purposes east of Madison County, the rocks of Morrow age between the Imo formation below and the Atoka formation above are called the Witts Springs formation
Lithology and environment
Primary lithology: lithified "limestone"
Includes fossils?Y
Lithology description: Limestone lenses
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Museum repositories:USGS
Metadata
Also known as:Locality Mu 2; Henbest, Oct. 6,1938
Database number:43428
Authorizer:J. Alroy Enterer:C. Simpson
Modifier:C. Simpson Research group:marine invertebrate
Created:2004-08-13 12:33:29 Last modified:2004-08-13 15:33:30
Access level:the public Released:2004-08-13 12:33:29
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]