C7. Valcour Island, Valcour Fm. (Ordovician of the United States)

Where: Clinton County, New York (44.6° N, 73.4° W: paleocoordinates 28.1° S, 54.8° W)

• coordinate estimated from map

When: Valcour Formation (Chazy Group), Chazy (466.0 - 457.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; gray limestone

• Light-gray crystalline layers made up of fragments of shells.

Size classes: macrofossils, mesofossils

Primary reference: P. E. Raymond. 1906. The Chazy Formation and its fauna. Annals of the Carnegie Museum 3(4):498-596 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 172247: authorized by Björn Kröger, entered by Björn Kröger on 31.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenidae
"Illaenus globosus" = Stenopareia globosus
"Illaenus globosus" = Stenopareia globosus Billings 1859 trilobite
 Asaphida - Asaphidae
Isotelus harrisi Raymond 1905 trilobite
Ostracoda
 Leperditicopida - Leperditiidae
Strophomenata
 Strophomenida - Rafinesquinidae
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia plena" = Rostricellula plena
"Camarotoechia plena" = Rostricellula plena Hall 1847
 Orthida - Plectorthidae
"Hebertella vulgaris" = Mimella vulgaris
"Hebertella vulgaris" = Mimella vulgaris Raymond 1911
Bivalvia
 Modiomorphida - Modiomorphidae
Modiolopsis fabaformis Raymond 1905 clam