Horizon 13, 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. Dynamic Stratigraphy and Depositional Environments of the Hamilton Group (Middle Devonian) in New York State, Part I, New York State Museum Bulletin (457)32-56 [A. Miller/K. Layou]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 8770: 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".
 Phacopida - Phacopidae
Phacops sp. Emmrich 1839 trilobite
 Productida - Productellidae
 Productida - Chonetidae
 Strophomenida - Strophodontidae
Pholidostrophia sp. Hall and Clarke 1892
 Athyridida - Meristellidae
 Athyridida - Athyrididae
 Spiriferinida - Cyrtinidae
Cyrtina sp. Davidson 1858
 Spiriferida - Spinocyrtiidae
 Spiriferida - Mucrospiriferidae
 Atrypida - Atrypidae
Pseudatrypa sp. Copper 1973
[entered as Pseudoatrypa sp.]
 Orthida - Rhipidomellidae
 Ostreida - Pterineidae
Actinopteria sp. Hall 1884 oyster
 Carditida - Cardiniidae
Cypricardinia sp. Hall 1860 clam
 Modiomorphida - Modiomorphidae
Modiomorpha sp. Hall and Whitfield 1869 clam
 Euomphalina - Platyceratidae
Naticonema sp. Perner 1903 snail
Platyceras sp. Conrad 1840 snail
 Fenestrida - Fenestellidae
 Fenestrata -
 Cystoporida - Sulcoreteporidae
 Cystoporida - Fistuliporidae
 Auloporida - Aulocystidae
Aulocystis sp. Schl├╝ter 1885 tabulate coral
 Favositida - Favositidae
Favosites sp. Lamarck 1816 tabulate coral
 Favositida - Pachyporidae
Cladopora sp. Hall 1851 tabulate coral
 Stauriida - Stereolasmatidae
Amplexiphyllum sp. Stumm 1949 horn coral
 Stauriida - Zaphrentidae
Heliophyllum sp. Hall 1846 horn coral
 Stauriida - Eridophyllidae
Eridophyllum sp. Milne-Edwards and Haime 1850 horn coral