A26. South end of Valcour Island, Crown Point 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

• outcrop-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: marine; gray, blue limestone

• Blue-gray, heavy-bedded,impure limestone, containing large black silicified fossils.

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 172229: authorized by Björn Kröger, entered by Björn Kröger on 31.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenidae
"Illaenus erastusi" = Platillaenus erastusi
"Illaenus erastusi" = Platillaenus erastusi Raymond 1905 trilobite
Ostracoda
 Palaeocopida -
Eurychilina latimarginata Raymond 1905 ostracod
 Leperditicopida - Leperditiidae
Leperditia canadensis Jones 1858 ostracod
Strophomenata
 Strophomenida - Rafinesquinidae
"Rafinesquina champlainensis" = Macrocoelia champlainensis
"Rafinesquina champlainensis" = Macrocoelia champlainensis Raymond 1902
Rhynchonellata
 Orthida - Plectorthidae
"Hebertella vulgaris" = Mimella vulgaris
"Hebertella vulgaris" = Mimella vulgaris Raymond 1911
Bivalvia
 Myalinida - Ambonychiidae
"Ambonychia curvata" = Ambonychiopsis curvata
"Ambonychia curvata" = Ambonychiopsis curvata Raymond 1905 clam
Gastropoda
 Euomphalina - Macluritidae
Maclurites magnus Le Sueur 1818 snail
 Murchisoniina - Lophospiridae
Lophospira perangulata Hall 1847 snail