NYSM locality 6306 (Ordovician of the United States)

Also known as NNE of Tribes Hill, Montgomery Co.

Where: Montgomery County, New York (43.0° N, 74.3° W: paleocoordinates 31.7° S, 68.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Canyon Road Member (Tribes Hill Formation), Skullrockian (485.4 - 478.6 Ma)

• "Lower Canyon Road Member ('Fonda Member' of Fisher, 1954), Tribes Hill Formation"

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, ferruginous, glauconitic, intraclastic, ooidal limestone

• The Canyon Road Member is "interpreted as a latest highstand systems tract. These intervals were earlier thought to be an intertidal facies (Braun and Friedman, 1969), but Landing et al. (1996) demonstrated that the environment was wave-dominated and somewhat deeper, with frequent storm beds that indicate episodically high-energy deposition. Thus, the peaks in cephalopod abundance and diversity discussed below indicate shallow, but not intertidal environments and a more restricted marine facies than that of the uppermost Sprakers, Van Wie, and lower Wolf Hollow members."

•According to lithology description, sequence stratigraphic interpretation, and stratigraphic position above reef rocks, these beds most likely represent lagoonal back-reef deposits. (TL)

• "In the Mohawk Valley, the Canyon Road Member [...] includes glauconitic-fossil hash-intraclast-Fe-ooid beds at its base [...]"

Size class: macrofossils

Preservation: cast

Collected by D. W. Fisher in 1954; reposited in the NYSM

Primary reference: B. Kröger and E. Landing. 2007. The Earliest Ordovician Cephalopods of Eastern Laurentia - Ellesmerocerids of the Tribes Hill Formation, Eastern New York. Journal of Paleontology 81(5):841-857 [B. Kröger/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87319: authorized by Björn Kröger, entered by Torsten Liebrecht on 15.03.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Dakeoceras gracilis Flower 1964
NYSM 17336