Cuticle Coal Gray Shale: Atokan, Indiana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Paleostachya sp.
Neuropteris heterophylla Brongniart 1825
recombined as Imparipteris heterophylla
Polypodiopsida - Hymenophyllales - Hymenophyllaceae
Eusphenopteris spp.
Polypodiopsida - Equisetales
Annularia radiata
Annularia sphenophylloides
Polypodiopsida - Equisetales - Calamitaceae
Asterophyllites grandis
Calamostachys sp. Schimper 1869
Pteropsida
Pecopteris miltonii
Alethopteris serlii
spelled with current rank as Pecopteris (Alethopteris)
Coniferales
Samaropsis spp.
Pinopsida - Cordaitanthales
Cordaites sp. Unger 1850
Sphenopteridae
Sphenopteris shatzlarensis
Medullosaceae
Neuropteris rarinervis
Neuropteris scheuchzeri
Neuropteris obliqua
Mariopteris nervosa Brongniart 1879
Equisetopsida - Sphenophyllales
Sphenophyllum cuneifolium
Sphenophyllum myriophyllum
unclassified
Crossotheca sp. Zeiller 1883
Sigillariaceae
Sigillaria cf. brardii
Lepidodendrales - Lepidodendraceae
Lepidodendron aculeatum Sternberg 1820
see common names

Geography
Country:United States State/province:Indiana
Coordinates: 39.0° North, 87.0° West (view map)
Paleocoordinates:8.7° South, 25.0° West
Time
Period:Carboniferous Epoch:Pennsylvanian
10 m.y. bin:Carboniferous 4
*Period:Late/Upper Carboniferous *Epoch:Moscovian
*International age/stage:Vereiskian *Local age/stage:Atokan
Key time interval:Atokan
Age range of interval:318.40000 - 312.70000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Block Coal Member:Gray Shales
Regional section:Eastern Interior Coal Region
Stratigraphic resolution:group of beds
Stratigraphy comments: The above assignments are based on a correlation chart on pp.47-48 of the report (Fig. 1)
Lithology and environment
Primary lithology:grading,micaceous,sideritic,gray sandy "shale"
Includes fossils?Y
Lithology description: Gray shales are the dominant lithology in the Roaring Creek area. They are laterally persistent, bu subject to considerable thickness changes, from less than 10 ft to greater than 50 ft. Although no lateral facies relationships have been observed among gray shales and other lithologies, the shales do become more sandy and micaceous closer to sandstone fill channels. Some of the gray shales, particularly those in the upper Block Coal part of the section, are relatively coarse grained, fining upwards in places, and have little evidence of in situ floral remains.
Environment:"floodplain"
Geology comments: These are interpreted as crevasee splay or flood deposits. Shales closer to stream level have in situ rooting horizons, and show vertical ?? changes that suggest gradual accumulation, or at least ?? through repeated that deposited various thicknesses of sediment.
Taphonomy
Size of fossils:macrofossils
Disassociated major elements:some
Disassociated minor elements:some
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:11198
Authorizer:H. Sims Enterer:S. Ostrowski, A. McGowan
Modifier:A. McGowan Research group:paleobotany
Collections that are a subset of this one:32910, 32927
Created:2001-07-23 09:00:30 Last modified:2003-07-11 10:48:08
Access level:the public Released:2001-07-23 09:00:30
Creative Commons license:CC BY
Reference information

Primary reference:
4127. W. A. DiMichele and G. Dolph. 1981. Compression floras of the Upper Mansfield/Lower Brazil and Upper Staunton Formation in Parke and Clay Counties, Indiana. Guidebook to Pennsylvanian Plant Localities, AIBS Field Trip No. 2. Indiana University Press, Bloomington, IN USA [H. Sims/S. Ostrowski]