Reedsville / Martinsburg Formation, Sowerbyella-Onniella community: Edenian, Pennsylvania and Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Crinoidea
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Crinoidea indet.
Miller 1821
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| Columnals | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Sowerbyella sericea
(Sowerby 1839)
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| recombined as Sowerbyella (Sowerbyella) sericea | ||||||||||
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Rafinesquina alternata
(Conrad 1838)
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Rhynchonellata
- Atrypida
- Anazygidae
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Zygospira modesta
(Hall 1847)
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Rhynchonellata
- Orthida
- Dalmanellidae
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Onniella multisecta
(James 1871)
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| recombined as Cincinnetina multisecta | ||||||||||
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Stenolaemata
- Trepostomata
- Halloporidae
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Hallopora sp.
Bassler 1911
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Gastropoda
- Murchisoniina
- Lophospiridae
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Ruedemannia lirata
(Ulrich and Scofield 1897)
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Loxoplocus (Lophospira) ventricosa
(Hall 1847)
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| recombined as Lophospira ventricosa | ||||||||||
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Loxoplocus (Lophospira) perangulata
(Hall 1847)
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| recombined as Lophospira perangulata | ||||||||||
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Loxoplocus (Lophospira) abbreviata
(Hall 1847)
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| replaced by Lophospira perangulata | ||||||||||
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Gastropoda
- Euomphalina
- Holopeidae
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Sinuopea sp.
Ulrich 1911
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= ? Holopea sp.
Hall 1847
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Wagner 2023 | |||||||||
| Poor specimens, but likely Holopea | ||||||||||
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Bivalvia
- Nuculida
- Praenuculidae
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Praenucula levata
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Bivalvia
- Solemyida
- Ctenodontidae
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Ctenodonta pulchella
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Bivalvia
- Myalinida
- Ambonychiidae
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Ambonychia radiata
Ulrich 1894
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| recombined as Byssonychia radiata | ||||||||||
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Bivalvia
- Lyrodesmatidae
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Lyrodesma poststriatum
(Emmons 1842)
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene sp.
Shirley 1936
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Trilobita
- Trinucleida
- Trinucleidae
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Cryptolithus sp.
Green 1832
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Trilobita
- Asaphida
- Asaphidae
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Isotelus sp.
Dekay 1824
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Pennsylvania and Virginia |
| Coordinates: | 39.8° North, 78.3° West (view map) | ||
| Paleocoordinates: | 29.0° South, 57.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| Key time interval: | Edenian | ||
| Age range of interval: | 451.10000 - 450.40000 m.y. ago |
Stratigraphy
| Formation: | Reedsville / Martinsburg | Member: | Upper | ||
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Listed as Upper Caradoc. Sowerbyella-Onniella community; primarily confined to central PA, with narrow tongue into Virginia | |||||
Lithology and environment
| Primary lithology: | fine lithified siltstone |
| Secondary lithology: | poorly lithified silty "shale" |
| Lithology description: Thin to medium-bedded fine-grained siltstones and silty shales | |
| Environment: | deep subtidal shelf |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Encrustation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 77103 | ||
| Authorizer: | P. Novack-Gottshall, P. Wagner | Enterer: | P. Hearn, P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2007-12-20 10:18:38 | Last modified: | 2021-06-03 21:14:36 |
| Access level: | the public | Released: | 2007-12-20 10:18:38 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26100. | P.W. Bretsky. 1969. Central Appalachian Late Ordovician communities. Geological Society America Bulletin 80:193-212 [P. Novack-Gottshall/P. Hearn/J. Ju] |
Secondary references:
| 9042 | P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner] |