Horizon 4, 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, or York submember, of the Centerfield

• bed-level stratigraphic resolution

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

• light gray to 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 8758: authorized by Arnold Miller, entered by Karen Layou on 28.08.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

• Data is presented 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 valves equal to one occurrence". Standardization means "bulk sampling counts were standardized by sample weight".
Show authors, comments, and common names
Rhynchonellata
 Spiriferida - Mucrospiriferidae
Mucrospirifer mucronatus
 Spiriferida - Ambocoeliidae
Ambocoelia sp.
Ambocoelia sp. Hall 1860
 Orthida - Rhipidomellidae
Rhipidomella sp.
 Rhynchonellida - Leiorhynchidae
Leiorhynchus sp.
Leiorhynchus sp. Hall 1860
Strophomenata
 Strophomenida - Chonetidae
Longispina sp., Devonochonetes scitulus
Bivalvia
 Myalinida - Lunulacardiidae
Pterochaenia sp.
Pterochaenia sp. Clarke 1904 clam
 Nuculanida - Cucullellidae
Nuculites sp.
Nuculites sp. Conrad 1841 clam
Gastropoda
 Euomphalina - Platyceratidae
Naticonema sp.
Naticonema sp. Perner 1903 snail
Trilobita
 Phacopida - Phacopidae
Phacops sp.
Phacops sp. Emmrich 1839 trilobite