Pentremites-Composita Community (II), Pitkin Limestone, Oklahoma: Chesterian, Oklahoma

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Anthyrsis sp.
0.2 %-specimens
Blastoidea - Spiraculata - Pentremitidae
Pentremites sp. Say 1820
Rhynchonellata - Rhynchonellida - Stenoscismatidae
Camarophoria sp.
5.0 %-specimens
replaced by Stenoscisma
Rhynchonellata - Spiriferida - Elythidae
Torynifer sp.
5.6 %-specimens
Rhynchonellata - Spiriferida - Spiriferidae
Anthracospirifer sp. Lane 1963
2.7 %-specimens
Rhynchonellata - Athyridida - Athyrididae
Cleiothyridina sp. Buckman 1906
1.2 %-specimens
Composita sp. Brown 1849
16.5 %-specimens
Rhynchonellata - Athyridida - Retziidae
Eumetria sp.
4.6 %-specimens
Rhynchonellata - Spiriferinida - Reticulariinidae
Reticulariina sp. Fredericks 1916
2.9 %-specimens
Rhynchonellata - Terebratulida - Dielasmatidae
Dielasma sp. King 1856
3.1 %-specimens
Strophomenata - Strophomenida - Rugosochonetidae
Rugosochonetes sp. Sokolskaja 1950
0.2 %-specimens
Eolissochonetes sp. Hoare 1960
3.6 %-specimens
Strophomenata - Productida - Productellidae
Diaphragmus sp. Girty 1910
15.7 %-specimens
Strophomenata - Productida - Productidae
Buxtonia sp.
6.5 %-specimens
Inflatia sp.
0.8 %-specimens
Strophomenata - Productida - Echinoconchidae
Echinoconchus sp.
1.3 %-specimens
Strophomenata - Productida - Monticuliferidae
Ovatia sp.
14.5 %-specimens
see common names

Geography
Country:United States State/province:Oklahoma
Coordinates: 35.9° North, 95.0° West (view map)
Paleocoordinates:11.7° South, 36.3° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Carboniferous Epoch:Mississippian
10 m.y. bin:Carboniferous 2-3
*Period:Middle Carboniferous *Local age/stage:Chesterian
Key time interval:Chesterian
Age range of interval:335.80000 - 323.20000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Stratigraphy comments: The Pitkin Fm. overlies the Fayetteville Fm. This boundary is gradational and for this study was taken to be the point at which shale partings between the limestone beds were not more than several inches thick. The Pitkin limestone ranges in thickness from 0 to over 60ft. in northeastern Oklahoma. The Pitkin is absent north of Wagoner and Cherokee counties due to truncation below lower Pennsylvanian strata. In the study area, the Pitkin represents the uppermost Mississippian and is unconformably overlain by lower Pennsylvanian Morrowan Series.
Lithology and environment
Primary lithology:shelly/skeletal packstone
Secondary lithology: grainstone
Lithology description: The Pitkin limestone is dark gray, bioclastic and ooltic limestone with lesser amounts of mudstone and wackestone.
Geology comments: In general, rocks dip away from the axis of the uplift which runs from Tahlequah northeast to the St. Francis Mountains. The Pitkin Limestone iss discontinuously exposed at the surface in the area due to northeast trending faulting and folding of the strata. The Pitkin Limestone thins to the north and northeast due to regional truncation during early Pennsylvanian time and tends to thicken to the south and southwest towards what was a basin at the time of depostion.
Taphonomy
Collection methods and comments
Collection excludes:all microfossils
Taxonomic list comments:Also included in the list is 0.8% pelecypods, 5.8% corals, 8.8% blastoids, 15% crinoids, 15% bryozoans
Metadata
Database number:12788
Authorizer:T. Olszewski Enterer:M. Gibson
Modifier:C. Visaggi Research group:marine invertebrate
Created:2001-12-16 14:23:12 Last modified:2004-07-07 20:29:21
Access level:the public Released:2001-12-16 14:23:12
Creative Commons license:CC BY
Reference information

Primary reference:
4237. R. S. F. Fabian. 1987. Relation of Biofacies to Lithofacies in interpreting Depositional Environments in the Pitkin Limestone (Mississippian) in Norhteastern Oklahoma (Part I). Shale Shaker 76-95 [T. Olszewski/M. Gibson]