Horizon 21, Centerfield Member, Wheeler Gully, Genesee Valley, Livingston Co., N (Devonian of the United States)

Where: Livingston County, New York (42.8° N, 77.8° W: paleocoordinates 36.7° S, 25.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Centerfield Member (Ludlowville Formation), Givetian (387.7 - 382.7 Ma)

• this horizon is within the upper transitional shales of the Wheeler Gully submember of the Centerfield

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; gray claystone

• light gray claystone

Collection methods: bulk, surface (in situ), chemical, mechanical,

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 8789: authorized by Arnold Miller, entered by Karen Layou on 29.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• 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".
Show authors, comments, and common names
Trilobita
 Phacopida - Acastidae
Greenops sp.
Greenops sp. Delo 1935 trilobite
 Phacopida - Phacopidae
Phacops sp.
Phacops sp. Emmrich 1839 trilobite
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp., Naticonema sp.
Platyceras sp. Conrad 1840 snail
Naticonema sp. Perner 1903 snail
Bivalvia
 Nuculanida - Malletiidae
Palaeoneilo sp.
Palaeoneilo sp. Hall and Whitfield 1869 clam
[entered as Paleoneilo sp.]
 Ostreida - Pterineidae
Actinopteria sp.
Actinopteria sp. Hall 1884 oyster
Rhynchonellata
 Athyridida - Parazygidae
Parazyga sp.
 Athyridida - Nucleospiridae
Nucleospira sp.
Nucleospira sp. Hall 1859
 Athyridida - Athyrididae
Athyris sp.
 Athyridida - Meristellidae
Meristella sp.
 Spiriferinida - Cyrtinidae
Cyrtina sp.
Cyrtina sp. Davidson 1858
 Spiriferida - Spinocyrtiidae
Mediospirifer sp.
 Spiriferida - Elythidae
Elita sp.
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
 Orthida - Rhipidomellidae
Rhipidomella sp.
 Atrypida - Atrypidae
"Pseudatrypa sp." = Pseudoatrypa
"Pseudatrypa sp." = Pseudoatrypa Copper 1973
[entered as Pseudoatrypa sp.]
Strophomenata
 Strophomenida - Leptostrophiidae
Protoleptostrophia sp.
 Strophomenida - Douvillinidae
Douvillina sp.
 Strophomenida - Chonetidae
Longispina sp., Devonochonetes scitulus
Stenolaemata
 Cryptostomata - Fenestellidae
Fenestella eumaciata, Fenestella planiramosa, Loculipora sp.
 Cystoporata - Fistuliporidae
Fistuliporidae indet.
 Cystoporida - Sulcoreteporidae
Sulcoretepora sp.
Anthozoa
 Favositida - Favositidae
Favosites sp.
Favosites sp. Lamarck 1816 tabulate coral
 Favositida - Pachyporidae
Cladopora sp.
Cladopora sp. Hall 1851 tabulate coral
 Auloporida - Aulocystidae
Aulocystis sp.
Aulocystis sp. Schlüter 1885 tabulate coral
 Stauriida - Zaphrentidae
Heliophyllum sp.
Heliophyllum sp. Hall 1846 horn coral