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Valcour

FormationValcour
Member(s)Beech
Ottosee
Age:466 - 458 Ma
Ordovician
IntervalChazy
Lithologylimestone, dolomite, dolomite/"limestone", dolomite/grainstone, dolomite/rudstone, grainstone/"limestone", grainstone, grainstone/wackestone, "limestone"/dolomite
Number of Collections31
Number of Occurrences94

Recorded Sample Locations

LocationRegionStratigraphic Name
Mingan IslandsCôte-Nord, Québec, CanadaValcour - ? Beech
Chazy villageClinton County, New York, USAValcour
Terrebonne reefLaval, Québec, CanadaValcour
Sloop BayClinton County, New York, USAValcour
Chazy villageClinton County, New York, USAValcour
Sloop IslandEssex County, New York, USAValcour
CornwallOntario, CanadaValcour
Valcour IslandChittenden County, Vermont, USAValcour
Isle La MotteGrand Isle County, Vermont, USAValcour
near VergennesAddison County, Vermont, USAValcour
Eagle CampGrand Isle County, Vermont, USAValcour
Along shore from Tiger Point to Big DykeClinton County, New York, USAValcour
North of Smuggler's BayClinton County, New York, USAValcour
SW of Rutland railroad stationGrand Isle County, Vermont, USAValcour
East of Isle La Motte villageGrand Isle County, Vermont, USAValcour
8-21-C. East of Isle La Motte villageGrand Isle County, Vermont, USAValcour
Southeastern hillslopeGrand Isle County, Vermont, USAValcour
South side of Sheldon LaneClinton County, New York, USAValcour
East of road 348Clinton County, New York, USAValcour
West of Limestone quarryGrand Isle County, Vermont, USAValcour
1.5 miles south of the center of Isle La Motte villageGrand Isle County, Vermont, USAValcour
West of Jordan PointGrand Isle County, Vermont, USAValcour
Quarry in Grand Isle CountyGrand Isle County, Vermont, USAValcour
near MiddleburyAddison County, Vermont, USAValcour
Mosheim Mbr.Knox County, Tennessee, USAValcour - Ottosee
Loc. BAddison County, Vermont, USAValcour

Associated Units

Stratigraphic NameAgeLithologyOccurrence Records
Aylmer458 - 453 Ma
Ordovician
limestone, sandstone, sandstone/"limestone"47
Chazy458 - 453 Ma
Ordovician
limestone14
Crown Point466 - 458 Ma
Ordovician
limestone, wackestone, "limestone"/dolomite, grainstone/dolomite, dolomite, grainstone/"limestone"134
Day Point466 - 458 Ma
Ordovician
limestone, dolomite, "limestone"/dolomite, grainstone, wackestone, rudstone/dolomite, grainstone/rudstone99
Lenoir461 - 450 Ma
Ordovician
lime mudstone, packstone/mudstone29
Lenoir - Asbury468 - 461 Ma
Middle Ordovician
carbonate, "limestone"17
Lenoir - Mosheim468 - 461 Ma
Middle Ordovician
carbonate, "limestone"11
Mingan466 - 443 Ma
Paleozoic
reef rocks, "limestone"152
Moccasin0.13 - 0.01 Ma
Pleistocene
limestone/"shale", "limestone", "carbonate"/mudstone, "limestone"/siltstone, mudstone/"limestone", claystone37
Valcour - Ottosee466 - 458 Ma
Ordovician
shale1
Whitesburg466 - 443 Ma
Paleozoic
limestone/"shale", "shale"/mudstone23
Chazy466 - 458 Ma
Ordovician
grainstone, grainstone/"limestone", "limestone", lime mudstone/"limestone", "shale"/claystone, sandstone, "limestone"/mudstone210
Chazy - Day Point466 - 458 Ma
Ordovician
limestone, "limestone"/dolomite, grainstone, "limestone"/grainstone, sandstone/grainstone, lime mudstone/"limestone", sandstone, "limestone"/sandstone, "limestone"/"shale"322
Chazy - Valcour466 - 458 Ma
Ordovician
limestone, lime mudstone, grainstone/"limestone", "limestone"/"shale", "reef rocks", lime mudstone/"limestone", "shale", dolomite455

Recorded Fossils

Accepted NameHierarchyAge
Eurychilina sp.
genus
6Animalia : Arthropoda : Ostracoda : Palaeocopida : Primitiidae : Eurychilina468.1 - 460.9 Ma
Middle Ordovician
Basilicus sp.
genus
6Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Basilicus468.1 - 460.9 Ma
Middle Ordovician
Homotelus sp.
genus
6Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Homotelus468.1 - 460.9 Ma
Middle Ordovician
Isotelus sp.
genus
6Animalia : Arthropoda : Trilobita : Asaphida : Asaphidae : Isotelus468.1 - 460.9 Ma
Middle Ordovician
Bumastus sp.
genus
6Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus468.1 - 460.9 Ma
Middle Ordovician
Ceraurus sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Ceraurus468.1 - 460.9 Ma
Middle Ordovician
Kawina sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Kawina468.1 - 460.9 Ma
Middle Ordovician
Nieszkowskia sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Nieszkowskia468.1 - 460.9 Ma
Middle Ordovician
Sphaerexochus sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Sphaerexochus468.1 - 460.9 Ma
Middle Ordovician
Pliomerops sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Pliomeridae : Pliomerops468.1 - 460.9 Ma
Middle Ordovician
Calyptaulax sp.
genus
6Animalia : Arthropoda : Trilobita : Phacopida : Pterygometopidae : Calyptaulax468.1 - 460.9 Ma
Middle Ordovician
Glaphurina sp.
genus
6Animalia : Arthropoda : Trilobita : Proetida : Glaphuridae : Glaphurina468.1 - 460.9 Ma
Middle Ordovician
Glaphurus sp.
genus
6Animalia : Arthropoda : Trilobita : Proetida : Glaphuridae : Glaphurus466 - 457.5 Ma
Ordovician
Petrocrania prona
species
7Animalia : Brachiopoda : Craniata : Craniida : Craniidae : Petrocrania : Petrocrania prona466 - 457.5 Ma
Ordovician
Lingulella columba
species
7Animalia : Brachiopoda : Lingulata : Lingulida : Obolidae : Lingulella : Lingulella columba466 - 457.5 Ma
Ordovician
Hesperorthis sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Hesperorthis468.1 - 460.9 Ma
Middle Ordovician
Ptychopleurella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Ptychopleurella468.1 - 460.9 Ma
Middle Ordovician
Orthambonites sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Orthidae : Orthambonites468.1 - 460.9 Ma
Middle Ordovician
Orthidium lamellosum
species
7Animalia : Brachiopoda : Rhynchonellata : Orthida : Orthidiellidae : Orthidium : Orthidium lamellosum466 - 457.5 Ma
Ordovician
Multicostella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Plaesiomyidae : Multicostella468.1 - 460.9 Ma
Middle Ordovician
Valcourea sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Plaesiomyidae : Valcourea468.1 - 460.9 Ma
Middle Ordovician
Mimella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Orthida : Plectorthidae : Mimella468.1 - 460.9 Ma
Middle Ordovician
Camerella sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Camerellidae : Camerella468.1 - 460.9 Ma
Middle Ordovician
Rostricellula sp.
genus
6Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Trigonirhynchiidae : Rostricellula468.1 - 460.9 Ma
Middle Ordovician
Rostricellula plena
species
7Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Trigonirhynchiidae : Rostricellula : Rostricellula plena466 - 457.5 Ma
Ordovician
Rostricellula pristina
species
7Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Trigonorhynchiidae : Rostricellula : Rostricellula pristina468.1 - 460.9 Ma
Middle Ordovician
Atelelasma sp.
genus
6Animalia : Brachiopoda : Strophomenata : Billingsellida : Clitambonitidae : Atelelasma468.1 - 460.9 Ma
Middle Ordovician
Atelelasma multicosta
species
7Animalia : Brachiopoda : Strophomenata : Billingsellida : Clitambonitidae : Atelelasma : Atelelasma multicosta466 - 457.5 Ma
Ordovician
Chazydictya chazyensis
species
7Animalia : Bryozoa : Stenolaemata : Chazydictya : Chazydictya chazyensis466 - 457.5 Ma
Ordovician
Eopachydictya gregaria
species
7Animalia : Bryozoa : Stenolaemata : Cryptostomida : Rhinidictyidae : Eopachydictya : Eopachydictya gregaria466 - 457.5 Ma
Ordovician
Pachydictya sheldonensis
species
7Animalia : Bryozoa : Stenolaemata : Cryptostomida : Rhinidictyidae : Pachydictya : Pachydictya sheldonensis466 - 457.5 Ma
Ordovician
Stictopora sp.
genus
6Animalia : Bryozoa : Stenolaemata : Cryptostomida : Ptilodictyidae : Stictopora466 - 457.5 Ma
Ordovician
Stictopora fenestrata
species
7Animalia : Bryozoa : Stenolaemata : Cryptostomida : Ptilodictyidae : Stictopora : Stictopora fenestrata466 - 457.5 Ma
Ordovician
Constellaria islensis
species
7Animalia : Bryozoa : Stenolaemata : Constellariidae : Constellaria : Constellaria islensis466 - 457.5 Ma
Ordovician
Phylloporina sp.
genus
6Animalia : Bryozoa : Stenolaemata : Fenestrida : Phylloporinidae : Phylloporina466 - 457.5 Ma
Ordovician
Atactotoechus kayi
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Atactotoechidae : Atactotoechus : Atactotoechus kayi466 - 457.5 Ma
Ordovician
Batostoma sp.
genus
6Animalia : Bryozoa : Stenolaemata : Trepostomatida : Trematoporidae : Batostoma468.1 - 460.9 Ma
Middle Ordovician
Batostoma campensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Trematoporidae : Batostoma : Batostoma campensis466 - 457.5 Ma
Ordovician
Batostoma chazyensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Trematoporidae : Batostoma : Batostoma chazyensis466 - 457.5 Ma
Ordovician
Batostoma lanensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Trematoporidae : Batostoma : Batostoma lanensis466 - 457.5 Ma
Ordovician
Batostoma sheldonensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Trematoporidae : Batostoma : Batostoma sheldonensis466 - 457.5 Ma
Ordovician
Champlainopora chazyensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomida : Champlainopora : Champlainopora chazyensis466 - 457.5 Ma
Ordovician
Jordanopora heroensis
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Jordanopora : Jordanopora heroensis466 - 457.5 Ma
Ordovician
Lamottopora duncanae
species
7Animalia : Bryozoa : Stenolaemata : Trepostomatida : Lamottopora : Lamottopora duncanae466 - 457.5 Ma
Ordovician
Nicholsonella sp.
genus
6Animalia : Bryozoa : Stenolaemata : Constellariidae : Nicholsonella466 - 457.5 Ma
Ordovician
Eofletcheria sp.
genus
6Animalia : Cnidaria : Anthozoa : Auloporidae : Eofletcheria468.1 - 460.9 Ma
Middle Ordovician
Eofletcheria incerta
species
7Animalia : Cnidaria : Anthozoa : Lichenariida : Lyoporidae : Eofletcheria : Eofletcheria incerta466 - 457.5 Ma
Ordovician
Nyctopora vantuyli
species
7Animalia : Cnidaria : Anthozoa : Syringophyllidae : Nyctopora : Nyctopora vantuyli468.1 - 460.9 Ma
Middle Ordovician
Billingsaria sp.
genus
6Animalia : Cnidaria : Anthozoa : Syringophyllidae : Billingsaria468.1 - 460.9 Ma
Middle Ordovician
Foerstephyllum wissleri
species
7Animalia : Cnidaria : Anthozoa : Favositidae : Foerstephyllum : Foerstephyllum wissleri468.1 - 460.9 Ma
Middle Ordovician
Conularia sp.
genus
6Animalia : Cnidaria : Staurozoa : Stauromedusae : Conulariidae : Conularia468.1 - 460.9 Ma
Middle Ordovician
Geraocrinus sculptus
species
7Animalia : Echinodermata : Crinoidea : Geraocrinus : Geraocrinus sculptus466 - 457.5 Ma
Ordovician
Palaeocystites sp.
genus
6Animalia : Echinodermata : Eocrinoidea : Gogiida : Palaeocystites468.1 - 460.9 Ma
Middle Ordovician
Blastoidocrinus sp.
genus
6Animalia : Echinodermata : Parablastoidea : Blastocystidae : Blastoidocrinus468.1 - 460.9 Ma
Middle Ordovician
Malocystites sp.
genus
6Animalia : Echinodermata : Paracrinoidea : Platycystitida : Malocystitidae : Malocystites468.1 - 460.9 Ma
Middle Ordovician
Canadocystis sp.
genus
6Animalia : Echinodermata : Paracrinoidea : Platycystitida : Platycystitidae : Canadocystis468.1 - 460.9 Ma
Middle Ordovician
Modiolopsis sp.
genus
6Animalia : Mollusca : Bivalvia : Unionida : Iridinidae : Modiolopsis468.1 - 460.9 Ma
Middle Ordovician
Modiolopsis parviuscula
species
7Animalia : Mollusca : Bivalvia : Unionida : Iridinidae : Modiolopsis : Modiolopsis parviuscula466 - 457.5 Ma
Ordovician
Ambonychia curvata
species
7Animalia : Mollusca : Bivalvia : Myalinida : Ambonychiidae : Ambonychiopsis : Ambonychia curvata466 - 457.5 Ma
Ordovician
Cleionychia sp.
genus
6Animalia : Mollusca : Bivalvia : Myalinida : Ambonychiidae : Cleionychia468.1 - 460.9 Ma
Middle Ordovician
Vanuxemia montrealensis
species
7Animalia : Mollusca : Bivalvia : Myalinida : Ambonychiidae : Cleionychia : Vanuxemia montrealensis466 - 457.5 Ma
Ordovician
Gonioceras chaziense
species
7Animalia : Mollusca : Cephalopoda : Gonioceratidae : Gonioceras : Gonioceras chaziense466 - 457.5 Ma
Ordovician
Barrandeoceras natator
species
7Animalia : Mollusca : Cephalopoda : Barrandeocerida : Barrandoceratidae : Barrandeoceras : Barrandeoceras natator466 - 457.5 Ma
Ordovician
Lamottoceras sp.
genus
6Animalia : Mollusca : Cephalopoda : Endoceratidae : Lamottoceras466 - 457.5 Ma
Ordovician
Lamottoceras nodosum
species
7Animalia : Mollusca : Cephalopoda : Endoceratidae : Lamottoceras : Lamottoceras nodosum466 - 457.5 Ma
Ordovician
Lamottoceras ruedemanni
species
7Animalia : Mollusca : Cephalopoda : Endoceratidae : Lamottoceras : Lamottoceras ruedemanni466 - 457.5 Ma
Ordovician
Oonoceras perkinsi
species
7Animalia : Mollusca : Cephalopoda : Proteoceratidae : Proteoceras : Oonoceras perkinsi466 - 457.5 Ma
Ordovician
Bucania sp.
genus
6Animalia : Mollusca : Gastropoda : Cycloneritida : Proserpinidae : Bucania468.1 - 460.9 Ma
Middle Ordovician
Maclurites sp.
genus
6Animalia : Mollusca : Gastropoda : Maclureadae : Maclurites468.1 - 460.9 Ma
Middle Ordovician
Maclurites magnus
species
7Animalia : Mollusca : Gastropoda : Euomphalina : Macluritidae : Maclurites : Maclurites magnus466 - 457.5 Ma
Ordovician
Raphistoma sp.
genus
6Animalia : Mollusca : Gastropoda : Raphistomatidae : Raphistoma468.1 - 460.9 Ma
Middle Ordovician
Subulites raymondi
species
7Animalia : Mollusca : Gastropoda : Littorinimorpha : Calyptraeidae : Cyrtospira : Subulites raymondi466 - 457.5 Ma
Ordovician
Lophospira rectistriata
species
7Animalia : Mollusca : Gastropoda : Lophospiridae : Lophospira : Lophospira rectistriata468.1 - 460.9 Ma
Middle Ordovician
Lophospira knoxvillensis
species
7Animalia : Mollusca : Gastropoda : Trochonematidae : Trochonemella : Lophospira knoxvillensis466 - 457.5 Ma
Ordovician
Pojetaconcha beecheri
species
7Animalia : Mollusca : Rostroconchia : Conocardiida : Bransoniidae : Pojetaconcha : Pojetaconcha beecheri466 - 457.5 Ma
Ordovician
Calathium sp.
genus
6Chlorophyta : Chlorophyceae : Receptaculitidae : Calathium466 - 457.5 Ma
Ordovician
Solenopora sp.
genus
6Plantae : Rhodophyta : Rhodophyceae : Solenoporaceae : Solenopora468.1 - 460.9 Ma
Middle Ordovician

References

Raymond P. E. (1905) The fauna of the Chazy Limestone, The American Journal of Science 20, 353-382
Raymond P. E. (1906) The Chazy Formation and its fauna, Annals of the Carnegie Museum 3 4, 498-596
Ruedemann R. (1906) Cephalopoda of the Beekmantown and Chazy formations of the Champlain Basin, Bulletin of the New York State Museum, Paleontology\r\n 14, 389-611
Raymond P. E. (1911) The Brachiopoda and Ostracoda of the Chazyan, Annals of the Carnegie Museum 7, 215-259
Raymond P. E. (1916) The Pelecypoda of the Chazy Formation, Annals of the Carnegie Museum 328, 325-343
Ulrich E. O. (1925) New classification of the "Heterocrinidae", Canada Geological Survey, Memoir 138, 82-106
Flower R. H. (1955) New Chazyan orthocones, Journal of Paleontology 29 5, 806-830
Flower R. H. (1957) The Ordovician Development of the Actinoceratida, with notes on Actinoceroid Morphology and Ordovician Stratigraphy, State Bureau of Mines and Mineral Resources New Mexico Institute of Mining and Technology, Memoir 2, 1-59
Welby C. W. (1961) Paleontological Notes: Occurrence of Foerstephyllum in Chazyan Rocks of vermont, Journal of Paleontology 35 2, 391-400
Ross J. R. P. (1962) Chazyan (Ordovician) Leptotrypellid and Atactotoechid Bryozoa, Journal of Paleontology 5 4, 727-739
Ross J. R. P. (1963) New Ordovician species of Chazyan Trepostome and Cryptostome Bryozoa, Journal of Paleontology 37 1, 57-63
Hofmann H. J. (1963) Ordovician Chazy Group in southern Quebec, AAPG Bulletin 47, 270-301
Ross J. R. P. (1963) Ordovician Cryptostome Bryozoa, Standard Chazyan Series, New York and Vermont, Geological Society America Bulletin 74, 577-608
Ross J. P. (1963) The Bryozoan Trepostome Batostoma in Chazyan (Ordovician) Strata, Journal of Paleontology 37 4, 857-866
Ross J. P. (1964) Morphology and Phylogeny of Early Ectoprocta (Bryozoa), Geological Society America Bulletin 75, 927-948
Pitcher M. (1964) Evolution of Chazyan (Ordovician) reefs of eastern United States and Canada, Bulletin of Canadian Petroleum Geology 12 3, 632-691
Laub R. S. (1984) Lichenaria Winchell & Schuchert, 1895, Lamottia Raymond, 1924 and the early history of the tabulate corals, Palaeontographica Americana 54, 159-163
Kröger B., Desrochers A., et al (2017) The reengineering of reef habitats during the great Ordovician biodiversification event, Palaios 32, 584-599
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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