Unit 17, Lower shale Member, Mahantango Fm., Rockville, Perry Co., PA: Givetian, Pennsylvania
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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| present | ||||||||||
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Bivalvia
- Nuculanida
- Cucullellidae
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Nuculites triqueter
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| present | ||||||||||
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Lingulata
- Lingulida
- Lingulidae
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Lingula sp.
Bruguiére 1797
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| present | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Pennsylvania | County: | Perry |
| Coordinates: | 40.3° North, 76.9° West (view map) | ||||
| Paleocoordinates: | 39.3° South, 25.3° West |
Time
| Period: | Devonian | Epoch: | Middle Devonian |
| Stage: | Givetian | 10 m.y. bin: | Devonian 3 | *Local age/stage: | Erian |
| Key time interval: | Givetian | ||
| Age range of interval: | 387.7 - 382.7 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Hamilton | Formation: | Mahantango | Member: | lower shale |
| Local section: | Rockville | Local bed: | unit 17 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | gray sandy "shale" | ||
| Lithology description: shale, sandy, medium dark gray | |||
| Environment: | marine indet. | Tectonic setting: | foreland basin |
Taphonomy
Collection methods and comments
| Collection methods: | surface (in situ) |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Relative abundance information: present (one specimen collected), common (2-10 specimens collected), abundant (more than 10 specimens collected), very abundant (sample extremely rich in a given species) | |
Metadata
| Database number: | 9663 | ||
| Authorizer: | A. Miller | Enterer: | K. Layou | Research group: | marine invertebrate |
| Created: | 2001-01-10 12:01:00 | Last modified: | 2001-08-30 17:52:51 |
| Access level: | the public | Released: | 2001-01-10 12:01:00 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 841. | R. L. Ellison. 1965. Stratigraphy and Paleontology of the Mahantango Formation in south-central Pennsylvania. Pennsylvania Geological Survey Bulletin G48 1-298 [A. Miller/K. Layou] |