Valcour Island, Lake Champlain, Chazy Group (Ordovician of the United States)

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lime mudstone and limestone

Size classes: macrofossils, mesofossils

Primary reference: P. E. Raymond. 1905. The fauna of the Chazy Limestone. The American Journal of Science 20:353-382 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 172180: authorized by Björn Kröger, entered by Björn Kröger on 29.07.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Palaeocopida -
"Primitia latimarginata" = Eurychilina latimarginata, "Eurychilina latimarginata" = Eurychilina latimarginata2
"Primitia latimarginata" = Eurychilina latimarginata Raymond 1905 ostracod
"Eurychilina latimarginata" = Eurychilina latimarginata2 Raymond 1905 ostracod
 Leperditicopida - Leperditiidae
Leperditia limatula Raymond 1905 ostracod
Leperditia nana2 Jones 1858 ostracod
Strophomenata
 Strophomenida - Rafinesquinidae
"Rafinesquina champlainensis" = Macrocoelia champlainensis2
"Rafinesquina champlainensis" = Macrocoelia champlainensis2 Raymond 1902
 Strophomenida - Glyptomenidae
"Strophomena prisca" = Glyptomena prisca
"Strophomena prisca" = Glyptomena prisca Raymond 1905
 Strophomenida - Strophomenidae
"Leptaena incrassata" = Dactylogonia incrassata2
"Leptaena incrassata" = Dactylogonia incrassata2 Hall 1847
Rhynchonellata
 Rhynchonellida - Trigonirhynchiidae
"Camarotoechia pristina" = Rostricellula pristina
"Camarotoechia pristina" = Rostricellula pristina Raymond 1905
 Orthida - Orthidae
"Hebertella exfoliata" = Orthambonites exfoliata
"Hebertella exfoliata" = Orthambonites exfoliata Raymond 1905
 Orthida - Plaesiomyidae
"Plaesiomys platys" = Multicostella platys2, "Plaesiomys strophomenoides" = Valcourea strophomenoides
"Plaesiomys platys" = Multicostella platys2 Billings 1859
"Plaesiomys strophomenoides" = Valcourea strophomenoides Raymond 1905
 Orthida - Orthidiellidae
Orthidium lamellosum2 Raymond 1905
Orthidium lamellosa Raymond 1905
 Orthida - Plectorthidae
"Hebertella vulgaris" = Mimella vulgaris2
"Hebertella vulgaris" = Mimella vulgaris2 Raymond 1911
Lingulata
 Siphonotretida - Siphonotretidae
"Schizambon duplicimuratus" = Schizambon duplicimuratum2
"Schizambon duplicimuratus" = Schizambon duplicimuratum2 Hudson 1905
Rostroconchia
 Conocardiida - Bransoniidae
"Conocardium beecheri" = Pojetaconcha beecheri
"Conocardium beecheri" = Pojetaconcha beecheri Raymond 1905
Bivalvia
 Myalinida - Ambonychiidae
"Clionychia marginalis" = Cleionychia marginalis, "Ambonychia curvata" = Ambonychiopsis curvata
"Clionychia marginalis" = Cleionychia marginalis Raymond 1905 clam
"Ambonychia curvata" = Ambonychiopsis curvata Raymond 1905 clam
 Modiomorphida - Modiomorphidae
Modiolopsis fabaformis, "Cyrtodonta tranceps" = Endodesma tranceps
Modiolopsis fabaformis Raymond 1905 clam
"Cyrtodonta tranceps" = Endodesma tranceps Raymond 1916 clam
Gastropoda
 Trochonematoidea - Trochonematidae
"Lophospira rectangularis" = Trochonemella knoxvillensis
"Lophospira rectangularis" = Trochonemella knoxvillensis Ulrich and Scofield 1897 snail
 Euomphalina - Holopeidae
Holopea scrutator Raymond 1905 snail
 Euomphalina - Lesueurillidae
"Helicotoma vagrans" = Eccyliopterus vagrans
"Helicotoma vagrans" = Eccyliopterus vagrans Raymond 1905 snail
 Murchisoniina - Straparollinidae
"Holopea hudsoni" = Straparollina hudsoni
"Holopea hudsoni" = Straparollina hudsoni Raymond 1905 snail
 Murchisoniina - Eotomariidae
"Eotomaria obsoletum" = Clathrospira euconica
"Eotomaria obsoletum" = Clathrospira euconica Butts 1926 snail
 Parablastoidea - Blastocystidae