West of Little Monty Bay (= Trombley Bay), Lake Champlain, Valcour Fm. (Ordovician of the United States)

Where: New York (44.9° N, 73.4° W: paleocoordinates 27.9° S, 54.7° W)

• coordinate estimated from map

When: Valcour Formation (Chazy Group), Chazyan (470.0 - 457.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lime mudstone

Size classes: macrofossils, mesofossils

Primary reference: R. H. Flower. 1955. New Chazyan orthocones. Journal of Paleontology 29(5):806-830 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 171817: authorized by Björn Kröger, entered by Björn Kröger on 21.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ascocerida - Hebetoceratidae
Hebetoceras mirandum1 Flower 1941
 Oncocerida - Valcouroceratidae
Valcouroceras cyclops2 Flower 1943
Valcouroceras obesum2 Flower 1943
 Actinocerida - Gonioceratidae
Gonioceras chaziense3 Ruedemann 1906
 Orthocerida - Proteoceratidae
Proteoceras perkinsi Ruedemann 1906