470b. Hall farm, one mile northeast of Whitehall (Cambrian of the United States)

Also known as Was Saukia serotina subzone, Whitehall Fm.

Where: Washington County, New York (42.6° N, 73.4° W: paleocoordinates 32.9° S, 74.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Saukiella serotina trilobite zone, Lower Member (Whitehall Formation), Sunwaptan (498.5 - 485.4 Ma)

• "Lower Whitehall Fm., (Trempealeau)->Franconian?, Saukia-Serotina subzone"

•Saukiella serotina subzone: 490.4 - 490.0 Ma, very top of Sunwaptan

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; ooidal, gray grainstone

• "stromatolitic, oolitic, etc. ls. Nearshore subtidal, (very shallow subtidal) ocean facing shelf (of unknown width) BA1-2."
• "The lower part of the Whitehall contains domal sltromatolites, thrombolites, and lime grainstones interpreted to have formed in supratidal, intertidal, and shallow-subtidal marine environments. The vagile epibenthic fauna probably occupied warm-water, nearshore, shallow-subtidal habitats characterized by sustained moderate to high turbulence. Some limestone beds contain length-slow chalcedony which is thought to be an indicator of general hypersalinity or widely fluctuating salinity conditions in the environment of deposition. "

•"Sample composed of medium-gray (N 5-6) ooid-skelletal grainstone and packstone"

Size class: macrofossils

Collected by E.O Ulrich, R. Ruedeman & J. Bridge in 7/8/1931; reposited in the USNM

Primary reference: M. E. Taylor and R. B. Halley. 1974. Systematics, environment, and biogeography of some Late Cambrian and Early Ordovician trilobites from eastern New York State. United States Geological Survey Professional Paper 834:1-38 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 85187: authorized by Pete Wagner, entered by Pete Wagner on 05.12.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• Originally from Sepkoski 1998 (ref. #13)
  - Dikelocephalidae
"Prosaukia" spinula Taylor and Halley 1974 trilobite
 Ptychopariida - Plethopeltidae
"Plethometopus "sp. A"" = Plethopeltis
"Plethometopus "sp. A"" = Plethopeltis Raymond 1913 trilobite
 Ptychopariida - Catillicephalidae
 Asaphida - Ptychaspididae
Euptychaspis "sp. indet." Ulrich 1931 trilobite
 Mimospirida - Onychochilidae
? Matherella sp. Walcott 1912
 Ribeirioida - Technophoridae
Ribeiria taylori n. sp. Pojeta and Runnegar 1976
 Pleurotomariida -
"Pleurotomariacea "gen. indet"" = Pleurotomarioidea
"Pleurotomariacea "gen. indet"" = Pleurotomarioidea Swainson 1840 snail
 Paleoloricata - Mattheviidae
Matthevia sp. Walcott 1885 chiton