7-11 Mine (dark shale unit): Stephanian A, Ohio
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Myriapoda
- Arthropleurida
- Arthropleuridae
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Arthropleura cristata
Richardson 1959
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Hannibal 1997 | 1 specimen | ||||||||
| CaMNH 33853 | ||||||||||
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unclassified
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Aphlebia sp.
Presl 1838
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| May be assignable to either a filicopsid or a pteridosperm | ||||||||||
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Sphenopsida
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Sphenopsida indet.
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| Calamitean diaphragm | ||||||||||
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Sigillariaceae
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Sigillaria brardii
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Lepidodendrales
- Lepidodendraceae
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Lepidostrobophyllum spp.
Hirmer 1927
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Cordaitales
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Cordaianthus spp.
Grand'Eury 1877
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unclassified
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Walchiostrobus sp.
Florin 1940
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Walchia sp.
Sternberg 1825
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Polypodiopsida
- Equisetales
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Annularia asteris
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Polypodiopsida
- Equisetales
- Calamitaceae
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Calamites suckowii
Brongniart 1828
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| Identification tentative due to poor preservation | ||||||||||
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Polypodiopsida
- Marattiales
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Asterotheca sp.
Presl 1845
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Ptychocarpus sp.
Weiss 1869
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Lycopsida
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Lycopsida indet. non-seed repro
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| Sigillarian cone axis | ||||||||||
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Pteropsida
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Pecopteris candolleana
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| Identification tentative due to poor preservation | ||||||||||
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Pecopteris unita
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Alethopteris sp.
Sternberg 1825
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Cordaitopsida
- Cordaitaceae
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Artisia sp.
Sternberg 1838
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Coniferales
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Samaropsis sp. seed/fruit
Göppert 1864
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Pinopsida
- Cordaitanthales
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Cordaites cf. principalis
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Pinopsida
- Pinales
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Gomphostrobus sp.
Marion 1890
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unclassified
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Cyperites sp.
Lindley and Hutton 1832
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Neuropteridae
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Cyclopteris orbicularis
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unclassified
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Neuropteris heterophylla
Brongniart 1825
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Sigillariostrobus sp.
Schimper 1870
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Medullosaceae
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Neuropteris ovata
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Neuropteris scheuchzeri
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| Identification tentative due to poor preservation | ||||||||||
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Peltaspermopsida
- Peltaspermales
- Peltaspermaceae
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Odontopteris aequalis
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unclassified
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Spiropteris sp.
Schimper 1869
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| May be assignable to either a filicopsid or a pteridosperm | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Ohio | County: | Columbiana |
| Coordinates: | 40.7° North, 80.7° West (view map) | ||||
| Paleocoordinates: | 6.6° South, 17.4° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| 10 m.y. bin: | Carboniferous 5 | ||
| *Period: | Late/Upper Carboniferous - Permian | *Epoch: | Moscovian - Kasimovian |
| *International age/stage: | Podolskian - Noginskian | *Local age/stage: | Desmonsian - Gzelian |
| Key time interval: | Stephanian A | ||
| Age range of interval: | 305 - 301.4 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Conemaugh | Formation: | Mahoning | Member: | Brush Creek |
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Considered equivalent to rocks of early Missourian/Stephanian A age. | |||||
Lithology and environment
| Primary lithology: | planar lamination,pyritic,black,gray lithified argillaceous,carbonaceous "shale" |
| Includes fossils? | Y |
| Lithology description: finely laminated dark gray to black organic shales...The fine-grained argillaceous matrix....The occurrence of abundant plant remains, permineralized by FeS2 (pyrite). | |
| Environment: | mire/swamp |
| Geology comments: A large portion of the lake sediments consisted of stagnant carbonaceous muck | |
Taphonomy
| Modes of preservation: | adpression,permineralized,replaced with pyrite |
| Size of fossils: | macrofossils |
| Disassociated major elements: | some |
| Disassociated minor elements: | some |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 11188 | ||
| Authorizer: | H. Sims, M. Clapham | Enterer: | S. Ostrowski, J. Cassara, A. McGowan, M. Clapham |
| Modifier: | M. Clapham | Research group: | paleobotany,paleoentomology |
| Created: | 2001-07-23 08:44:16 | Last modified: | 2024-03-06 22:11:59 |
| Access level: | the public | Released: | 2001-07-23 08:44:16 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4125. | M. A. McComas. 1988. Upper Pennsylvanian compression floras of the 7-11 Mine, Columbiana County, northeastern Ohio. Ohio Journal of Science 88:48-52 [H. Sims/S. Ostrowski] |
Secondary references:
| 87746 | J. T. Hannibal. 1997. Remains of Arthropleura, a gigantic myriapod arthropod, from the Pennsylvanian of Ohio and Pennsylvania. Kirtlandia 50:1-9 [M. Clapham/M. Clapham] |