Johnson Creek Loc. 3 (Carboniferous to of the United States)

Where: Johnson County, Illinois (37.5° N, 88.9° W: paleocoordinates 16.7° S, 35.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Chester Group, Tournaisian to Tournaisian (358.9 - 323.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: delta plain; shale and coal

• he distibution trends for plant fossils in the Chester Series of the Illinois Basin are interpreted as suggesting that successive, narrow deltaic lobes were built into the Illinois Basin during the Chesterian, and that only along these most active sites of depostion were land-plant habitats available. The restriction of plant fossils to the top of the clastic-dominated formations can be explained if the lower part of these units is interpreted as progradational, while only the uppermost part represents depostion on a delta platform.

Size class: macrofossils

Preservation: mold/impression

Collection methods: surface (in situ),

Primary reference: J. R. Jennings. 1984. Distribution of Fossil Plant Taxa in the Upper Mississippian and Lower Pennsylvanian of the Illinois Basin. In P. K. Sutherland (ed.), Biostratigraphy (Compte Rendu, Congrès International de Stratigraphie et de Géologie du Carbonifère, 9th, v. 2) 2:301-312 [H. Sims/S. Ostrowski/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23914: authorized by Hallie Sims, entered by Heather Lindon on 24.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Tracheophyta indet.
Tracheophyta indet.
Compression of small stem with attached leaves
Telangiopsis
  -
Telangiopsis sp.
Telangiopsis sp. Eggert and Taylor 1971
Pteropsida
  -
Rhodea cf. trichomanoides
Rhodea cf. trichomanoides Brongniart 1829
 Filicinae -
Pecopteris sp.
Pecopteris sp. Brongniart 1822
Polypodiopsida
 Schizaeales - Polypodiidae
Senftenbergia sp.
Senftenbergia sp. Corda 1845