Niagara Gorge - Irondequoit Limestone 146-164 feet: Sheinwoodian, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Crinoidea
|
|||||||
|
Crinoidea indet.
Miller 1821
|
|||||||
|
Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
|
|||||||
|
Rhynchotreta robusta
|
|||||||
|
Rhynchonellata
- Athyridida
- Meristellidae
|
|||||||
|
Whitfieldella cylindrica
|
|||||||
|
Whitfieldella intermedia
|
|||||||
|
Rhynchonellata
- Atrypida
- Atrypidae
|
|||||||
|
Atrypa rugosa
|
|||||||
|
Atrypa reticularis
(Linnaeus 1758)
|
|||||||
|
Strophomenata
- Strophomenida
- Strophodontidae
|
|||||||
|
Stropheodonta profunda
(Hall 1852)
|
|||||||
|
Strophomenata
- Strophomenida
- Rafinesquinidae
|
|||||||
|
Leptaena rhomboidalis
(Wahlenberg 1818)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | New York | County: | Niagara |
| Coordinates: | 43.2° North, 79.1° West (view map) | ||||
| Paleocoordinates: | 26.1° South, 46.0° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | small collection |
Time
| Period: | Silurian | Epoch: | Wenlock |
| Stage: | Sheinwoodian | 10 m.y. bin: | Silurian 2 |
| Key time interval: | Sheinwoodian | ||
| Age range of interval: | 433.4 - 430.5 m.y. ago |
Stratigraphy
| Geological group: | Clinton | Formation: | Irondequoit |
| Local section: | Niagara Gorge | Local bed: | 146 ft |
| Local order: | top to bottom | ||
| Stratigraphic resolution: | group of beds |
Lithology and environment
| Primary lithology: | shelly/skeletal lithified "limestone" |
| Secondary lithology: | lithified argillaceous "reef rocks" |
| Includes fossils? | Y |
| Lithology description: Light gray, some pink crystalline limestone. Some layers composed of crinoid stems. Porous and brown to yellow when weathered. Fossiliferous. Number of species limited. Toward the top very argillaceous reeflike limestone extends into base of overlying Rochester. Reef fossiliferous, but not examined closely. | |
| Environment: | carbonate indet. |
Taphonomy
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 81785 | ||
| Authorizer: | L. Ivany | Enterer: | P. Wall |
| Modifier: | P. Wall | ||
| Created: | 2008-07-15 18:37:46 | Last modified: | 2008-07-15 22:00:15 |
| Access level: | the public | Released: | 2008-07-15 18:37:46 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 27610. | T. Gillette. 1947. The Clinton of Western and Central New York. New York State Museum Bulletin (341) [L. Ivany/P. Wall] |