7-11 Mine (clay-ironstone horizon): Westphalian D - Stephanian A, Ohio
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Pteropsida
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Pecopteris arborescens
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Pecopteris candolleana
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cf. Pecopteris cyathea
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Pecopteris lamuriana
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Pecopteris miltonii
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Pecopteris unita
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Alethopteris sp.
Sternberg 1825
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Lycopsida
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Lycopsida indet. non-seed repro
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| unidentified strobili (2) | ||||||||||
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unclassified
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Danaeites emersonii
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Mixoneura sp.
Weiss 1870
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Lescuropteris moorii
(Lesquereux 1858)
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Polypodiopsida
- Cyatheales
- Cyatheaceae
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Pecopteris hemitelioides
Brongniart 1834
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Polypodiopsida
- Equisetales
- Calamitaceae
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Calamites suckowii
Brongniart 1828
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cf. Calamostachys sp.
Schimper 1869
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Polypodiopsida
- Equisetales
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Annularia asteris
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Annularia radiata
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Annularia sphenophylloides
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Annularia stellata
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Polypodiopsida
- Marattiales
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Asterotheca sp.
Presl 1845
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| Identification tentative due to poor preservation | ||||||||||
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Neuropteridae
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Cyclopteris orbicularis
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Cyclopteris trichomanoides
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Linopteris neuropteroides
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Linopteris muensteri
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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 | ||||||||||
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Cardiocarpales
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Cardiocarpon spp.
Brongniart 1828
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Pinopsida
- Cordaitanthales
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Cordaites cf. principalis
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Sphenopteridae
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Sphenopteris minutisecta
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Sphenopteris cf. elegans
(Brongniart 1822)
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unclassified
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Alloiopteris erosa
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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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Cycadopsida
- Cycadales
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Taeniopteris lescuriana
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Taeniopteris newberriana
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Gigantopteridales
- Gigantopteridaceae
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cf. Megalopteris sp.
Schenk 1883
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Medullosaceae
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Neuropteris ovata
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Neuropteris scheuchzeri
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Equisetopsida
- Sphenophyllales
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Sphenophyllum majus
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Sphenophyllum oblongifolium
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Peltaspermopsida
- Peltaspermales
- Peltaspermaceae
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Odontopteris aequalis
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Odontopteris brardii
Brongniart 1825
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unclassified
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Neuropteris heterophylla
Brongniart 1825
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Ohio | County: | Columbiana |
| Coordinates: | 40.7° North, 80.7° West (view map) | ||||
| Paleocoordinates: | 7.4° South, 18.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Carboniferous | Epoch: | Pennsylvanian |
| Stage: | Moscovian | 10 m.y. bin: | Carboniferous 4 - Carboniferous 5 |
| *Period: | Late/Upper Carboniferous - Permian | *Epoch: | Moscovian - Kasimovian |
| *International age/stage: | Podolskian - Noginskian | *Local age/stage: | Late/Upper Desmonsian - Gzelian |
| Key time interval: | Westphalian D - Stephanian A | ||
| Age range of interval: | 309.8 - 301.4 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
Lithology and environment
| Primary lithology: | ferruginous,sideritic silty claystone |
| Includes fossils? | Y |
| Lithology description: Nine distinct, resistant, laterally continuous, clay-ironstone interbeds (ranging from 3.1-12.2 cm in thickness) occur between 0.3 and 3.8 m of the lower contact. These beds are composed of clay-siderite with small amounts of silty impurity. | |
| Environment: | lacustrine - small |
| Geology comments: Flocculation (adhesion of clays together) occurred. Very low energy regime. Interpreted as an oxbow lake (p. 50) | |
Taphonomy
| Modes of preservation: | adpression |
| Size of fossils: | macrofossils |
| Temporal resolution: | snapshot |
| Spatial resolution: | parautochthonous |
Collection methods and comments
| Collection excludes: | difficult macrofossils |
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 11187 | ||
| Authorizer: | H. Sims | Enterer: | S. Ostrowski, J. Cassara, A. McGowan |
| Modifier: | M. Clapham | Research group: | paleobotany |
| Created: | 2001-07-23 08:43:24 | Last modified: | 2024-03-06 22:14:42 |
| Access level: | the public | Released: | 2001-07-23 08:43:24 |
| 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] |