Horizon 11, Centerfield Member, Triphammer Falls, Genesee Valley, Livingston Co. (Devonian of the United States)

Where: Livingston County, New York (42.9° N, 77.8° W: paleocoordinates 36.7° S, 25.3° 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 lower transitional shales of the York submember of the Centerfield

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; gray, argillaceous limestone

• argillaceous limestone

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 8768: 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".
Anthozoa
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
 Stauriida - Stereolasmatidae
Stereolasma sp. Simpson 1900 horn coral
 Stauriida - Zaphrentidae
Heliophyllum sp. Hall 1846 horn coral
Stenolaemata
 Cystoporata - Fistuliporidae
 Cryptostomata - Fenestellidae
 Cystoporida - Sulcoreteporidae
Rhynchonellata
 Spiriferida - Spinocyrtiidae
 Athyridida - Athyrididae
 Athyridida - Meristellidae
 Atrypida - Atrypidae
"Pseudatrypa sp." = Pseudoatrypa
"Pseudatrypa sp." = Pseudoatrypa Copper 1973
[entered as Pseudoatrypa sp.]
 Orthida - Rhipidomellidae
Strophomenata
 Productida - Productellidae
 Strophomenida - Chonetidae
 Strophomenida - Strophodontidae
Pholidostrophia sp. Hall and Clarke 1892
 Strophomenida - Douvillinidae
Bivalvia
 Ostreida - Pterineidae
Actinopteria sp. Hall 1884 oyster
Gastropoda
 Euomphalina - Platyceratidae
Naticonema sp. Perner 1903 snail
Platyceras sp. Conrad 1840 snail
Trilobita
 Phacopida - Phacopidae
Phacops sp. Emmrich 1839 trilobite
 Phacopida - Acastidae
Greenops sp. Delo 1935 trilobite