ammonites
Niagara Stone Quarry, Oak Orchard Formation (3.1 m), Niagara Co., New York (Silurian of the United States)

Where: Niagara County, New York (43.1° N, 79.0° W: paleocoordinates 28.4° S, 43.0° W)

• coordinate based on nearby landmark

When: Oak Orchard Formation, Wenlock (428.2 - 422.9 Ma)

• 3.0 m above base. The Oak Orchard Fm. spans the Ozarkodina? crassa - Ancoradella ploeckensis zones. It is not possible to tell exactly where each sample location falls within these zones.

Environment/lithology: marine; dolomite

• argillaceous, vuggy, stylolitic, stromatolitic dolomite according to strat section. no environment info given.

Primary reference: M. A. Kleffner. 1991. Conodont biostratigraphy of the upper part of the Clinton Group and the Lockport Group (Silurian) in the Niagara Gorge region, New York and Ontario. Journal of Paleontology 65(3):500-511 [J. Alroy/M. Sommers/J. Alroy] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 772: authorized by John Alroy, entered by Mike Sommers on 04.03.1999

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)