ammonites
Valcour Island ("Middle Chazy limestone") (Ordovician to of the United States)

Also known as Lake Champlain

Where: Clinton County, New York (44.6° N, 73.4° W: paleocoordinates 27.5° S, 53.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Chazy Group, Marmor to Marmor (468.1 - 449.5 Ma)

• " Middle Chazy limestone [...] " (Flower, 1952 p. 54). This may be in the Crown Point Fm. but is does not have to. The beds of the middle part of the Chazy gp. are Marmor to Ashby in age according to Kapp & Stearn (1975, J. Paleont. 49(1)).

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: cast

Reposited in the USNM

Primary reference: R. H. Flower. 1952. New Ordovician Cephalopods from Eastern North America. Journal of Paleontology 26(1):24-59 [B. Kröger/T. Liebrecht] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 89105: authorized by Björn Kröger, entered by Torsten Liebrecht on 05.05.2009