Chemung formation (overview): Frasnian, Virginia
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Carniferella carinata
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Bivalvia
- Solemyida
- Solemyidae
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? Solemya sp.
Children 1823
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Bivalvia
- Pholadomyida
- Edmondiidae
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? Edmondia sp.
de Koninck 1841
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Rhynchonellata
- Spiriferida
- Cyrtospiriferidae
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Cyrtospirifer aff. disjunctus
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Rhynchonellata
- Spiriferida
- Spiriferidae
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Spirifer ? marcyi
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Spirifer mesistrialis
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa reticularis
(Linnaeus 1758)
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| original and current combination Anomia reticularis | |||||||
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Atrypa spinosa
Hall 1843
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| recombined as Spinatrypa spinosa | |||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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Camarotoechia congregata
(Conrad 1841)
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| recombined as Cupularostrum congregata | |||||||
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Rhynchonellata
- Rhynchonellida
- Leiorhynchidae
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Leiorhynchus mesicostale
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Rhynchonellata
- Rhynchonellida
- Camarotoechiidae
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Camarotoechia contracta
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Strophomenata
- Strophomenida
- Chonetidae
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Chonetes cf. scitulus
(Hall 1857)
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| recombined as Devonochonetes scitulus | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Virginia | County: | Washington |
| Coordinates: | 36.8° North, 82.3° West (view map) | ||||
| Paleocoordinates: | 38.5° South, 32.1° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | local area |
Time
| Period: | Devonian | Epoch: | Late/Upper Devonian |
| Stage: | Frasnian | 10 m.y. bin: | Devonian 4 | *Epoch: | Late |
| Key time interval: | Frasnian | ||
| Age range of interval: | 382.70000 - 372.20000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Chemung |
| Stratigraphic resolution: | formation |
Lithology and environment
| Primary lithology: | gray,green lithified argillaceous,conglomeratic siltstone |
| Secondary lithology: | sandstone |
| Includes fossils? | Y |
| Lithology description: light gray siltstone and sandstone interbedded with light greenish gray silty shale; quartz pebble conglomerate at top; fossiliferous. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 6994 | ||
| Authorizer: | J. Alroy | Enterer: | M. Sommers |
| Modifier: | C. Visaggi | Research group: | marine invertebrate |
| Collections that are a subset of this one: | |||
| Created: | 2000-04-18 15:18:54 | Last modified: | 2004-03-11 16:25:11 |
| Access level: | the public | Released: | 2000-11-20 13:53:33 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 437. | C. S., J.r. Bartlett and H. W. Webb. 1971. Geology of the Bristol and Wallace quadrangles, Virginia. Virginia Division of Mineral Resources Report of Investigations 25:1-93 [J. Alroy/M. Sommers/P. Wagner] |