Horizon 30, Ledyard Member, Wheeler Gully, Genesee Valley, Livingston Co., NY: Givetian, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Gastropoda
- Euomphalina
- Platyceratidae
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Naticonema sp.
Perner 1903
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1 individual | |||||||||
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Bivalvia
- Nuculanida
- Malletiidae
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Palaeoneilo sp.
Hall and Whitfield 1869
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2 individuals | |||||||||
| [entered as Paleoneilo sp.] | ||||||||||
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Bivalvia
- Modiomorphida
- Cypricardiniidae
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Cypricardinia sp.
Hall 1860
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14 individuals | |||||||||
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Bivalvia
- Myalinida
- Lunulacardiidae
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Pterochaenia sp.
Clarke 1904
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1 individual | |||||||||
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Rhynchonellata
- Spiriferida
- Mucrospiriferidae
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Mucrospirifer mucronatus
(Conrad 1841)
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1 individual | |||||||||
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Rhynchonellata
- Spiriferida
- Elythidae
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Elita sp.
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1 individual | |||||||||
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Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Ambocoelia sp.
Hall 1860
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5 individuals | |||||||||
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Rhynchonellata
- Atrypida
- Atrypidae
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Pseudatrypa sp.
(Copper 1973)
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36 individuals | |||||||||
| original and current combination Pseudoatrypa | ||||||||||
| [entered as Pseudoatrypa sp.] | ||||||||||
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Rhynchonellata
- Athyridida
- Nucleospiridae
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Nucleospira sp.
Hall 1859
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1 individual | |||||||||
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Rhynchonellata
- Athyridida
- Meristellidae
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Meristella sp.
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1 individual | |||||||||
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Rhipidomella sp.
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1 individual | |||||||||
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Strophomenata
- Strophomenida
- Leptostrophiidae
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Protoleptostrophia sp.
Caster 1939
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3 individuals | |||||||||
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Strophomenata
- Strophomenida
- Douvillinidae
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Douvillina sp.
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2 individuals | |||||||||
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Strophomenata
- Strophomenida
- Chonetidae
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Longispina sp.
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6 individuals | |||||||||
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Devonochonetes sp.
Muir-Wood 1962
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7 individuals | |||||||||
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Stenolaemata
- Cystoporata
- Fistuliporidae
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Fistuliporidae indet.
Ulrich 1882
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Stenolaemata
- Cystoporida
- Sulcoreteporidae
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Sulcoretepora sp.
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Stenolaemata
- Cryptostomata
- Fenestellidae
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Loculipora sp.
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Fenestella eumaciata
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Fenestella planiramosa
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Trilobita
- Phacopida
- Phacopidae
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Phacops sp.
Emmrich 1839
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2 individuals | |||||||||
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Trilobita
- Phacopida
- Acastidae
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Greenops sp.
Delo 1935
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1 individual | |||||||||
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Anthozoa
- Stauriida
- Stereolasmatidae
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Stereolasma sp.
Simpson 1900
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10 individuals | |||||||||
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Anthozoa
- Favositida
- Micheliniidae
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Pleurodictyum sp.
Goldfuss 1829
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1 individual | |||||||||
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Anthozoa
- Auloporida
- Aulocystidae
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Aulocystis sp.
Schlüter 1885
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148 individuals | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York | County: | Livingston |
| Coordinates: | 42.8° North, 77.8° West (view map) | ||||
| Paleocoordinates: | 36.7° South, 25.4° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | small collection |
Time
| Period: | Devonian | Epoch: | Middle Devonian |
| Stage: | Givetian | 10 m.y. bin: | Devonian 3 |
| Key time interval: | Givetian | ||
| Age range of interval: | 387.70000 - 382.70000 m.y. ago |
Stratigraphy
| Formation: | Ludlowville | Member: | Ledyard | ||
| Local section: | Wheeler Gully | Local bed: | 30 | ||
| Local order: | bottom to top | ||||
| Regional section: | Genesee Valley | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: this horizon is within the upper transitional shales of the Wheeler Gully submember of the Centerfield | |||||
Lithology and environment
| Primary lithology: | gray claystone | ||
| Lithology description: dark gray claystone | |||
| Environment: | transition zone/lower shoreface | Tectonic setting: | foreland basin |
Taphonomy
| Modes of preservation: | body |
Collection methods and comments
| Collection methods: | bulk,surface (in situ),chemical,mechanical,field collection,observed (not collected) |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Data is presented in two ways in the paper: as presence/absence data for all 34 sampled horizons, and standardized abundances for 23 of those horizons. Where available, abundance data is entered. Counts from bulk sampling "were adjusted uniformly for fragmented and single valve occurences by multiplying through a ratio--4 fragments or 2 valve equal to one occurence." Standardization means "bulk sampling counts were standardized by sample weight". | |
Metadata
| Database number: | 8795 | ||
| Authorizer: | A. Miller | Enterer: | K. Layou |
| Modifier: | C. Ferguson | Research group: | marine invertebrate |
| Created: | 2000-08-29 13:55:37 | Last modified: | 2004-04-27 18:49:56 |
| Access level: | the public | Released: | 2000-11-20 13:53:40 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 684. | M. Savarese, L. M. Gray, and C. E. Brett. 1986. Faunal and Lithologic Cyclicity in the Centerfield Member (Middle Devonian: Hamilton Group) of Western New York: A Reinterpretation of Depositional History. In E. Landing, C. E. Brett (eds.), Dynamic Stratigraphy and Depositional Environments of the Hamilton Group (Middle Devonian) in New York State, Part I 457:32-56 [A. Miller/K. Layou/P. Wagner] |