West side of road 348, 1.85 miles SW of Chazy village, NY, Crown Point Fm: Chazyan, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Endocerida - Cyrtendoceratidae
Cyrtovaginoceras sp. Kobayashi 1934
Flower 1961
Cephalopoda - Actinocerida - Gonioceratidae
Gonioceras brainerdi Flower 1957
Flower 1961
Gonioceras chaziense Ruedemann 1906
Cephalopoda - Orthocerida - Proteoceratidae
Stereospyroceras clintoni (Miller 1877)
Flower 1961
Ruedemannoceras boycii (Whitfield 1886)
Flower 1961
recombined as Cyrtactinoceras boycii
Gastropoda - Euomphalina - Macluritidae
Maclurites magnus (Le Sueur 1818)
Raymond 1906
Strophomenata - Orthotetida - Triplesiidae
Camerella longirostris (Billings 1859)
Raymond 1906
corrected as Camarella longirostris
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina champlainensis Raymond 1902
Raymond 1906
recombined as Macrocoelia champlainensis
Rhynchonellata - Orthida - Plaesiomyidae
Plaesiomys platys (Billings 1859)
Raymond 1906
recombined as Multicostella platys
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Camarotoechia pristina Raymond 1905
Raymond 1906
recombined as Rostricellula pristina
Rhynchonellata - Rhynchonellida - Sphenotretidae
Zygospira acutirostris (Hall 1847)
Raymond 1906
recombined as Sphenotreta acutirostris
Stenolaemata - Trepostomida
Nicholsonella sp. Ulrich 1890
Ross 1963
Stenolaemata - Phylloporinidae
Phylloporina sp. Foerste 1887
Ross 1963
Stenolaemata - Cryptostomata - Rhinidictyidae
Rhinidictya fenestrata (Hall 1847)
Raymond 1906
original and current combination Stictopora fenestrata
Stenolaemata - Trepostomata - Trematoporidae
Batostoma chazyensis Ross 1963
Ross 1963
Trilobita - Corynexochida - Illaenidae
Illaenus globosus Billings 1859
Raymond 1906
recombined as Stenopareia globosus
Trilobita - Phacopida - Pliomeridae
Pliomerops canadensis (Billings 1859)
Raymond 1906
see common names

Geography
Country:United States State/province:New York
Coordinates: 44.9° North, 73.5° West (view map)
Paleocoordinates:27.9° South, 54.7° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Ordovician
10 m.y. bin:Ordovician 2-4
Key time interval:Chazyan
Age range of interval:470.00000 - 457.00000 m.y. ago
Stratigraphy
Geological group:Chazy Formation:Crown Point
Stratigraphic resolution:formation
Stratigraphy comments: "Group B" of the Chazy Formation (Middle Chazy). This would Llandeilo on the old scales.
Lithology and environment
Primary lithology:nodular "limestone"
Secondary lithology: dolomite
Lithology description: Details of the divisions at each of the localities from which each specimen listed are not given, thus I will give a complete description of lithologies summarized by Ruedemann for the formation at two different localities. “Section of the Chazy beds at Valcour in ascending order: The Chazy beds at Valcour form a low anticline. B1, a hard, compact, gray limestone, exposed at water edge, on land of Ezra Day. 2 feet of its top exposed. B2, same rock. 6 inches. B3, gray, shaly impure limestone with mud seams; very fossiliferous. 1 foot 4 inches. B4, more crystalline limestone with darker shaly intercalations. 1 foot 10 inches. Contains numerous small bryozoan reefs and other fossils; also many cephalopods in its upper layer (just north of fence diving lands of George and Ezra Day). B5, darker, impure shaly limestone. 1 foot 6 inches. Contains some large nautiloids. B6, a gray shaly limestone, 3 feet, containing a rich fauna (Bolboporites, Malocystites, brachipods, trilobites). B7, series of heavier, dark gray beds with abundant plates of Palaocystites. 7a-10 inches, barren; 7b-14 inches, in lower 3 inches full of trilobites; 7c-3 feet 6 inches, barren; 7c2-8 inches, hard crystalline gray limestone with trilobites. B8, 5 ½ feet of dark shaly limestone, nearly bluish gray and very fossiliferous, containing orthoceracones. Since we can do no better than base our future stratigraphic work on the larger lithologic divisions recognized by Brainerd and Seely in the Beekmantown formation at East shore ham Vt. And in the Chazy formation at Chazy village, we refer the fossils obtained at other places than the Valcour shore provisionally to those divisions.” = Bryozoan biosparrudite
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some genera
Reason for describing collection:taxonomic analysis
Metadata
Also known as:B3 of Brainerd & Seely (1888) and Ruedemann (1906),=E11 of Raymond (1906), 8-19-E. of Ross (1963)
Database number:42808
Authorizer:P. Wagner, B. Kröger Enterer:K. Koverman, B. Kröger
Modifier:B. Kröger Research group:marine invertebrate
Created:2004-08-05 13:25:42 Last modified:2024-03-31 19:20:59
Access level:the public Released:2004-08-05 13:25:42
Creative Commons license:CC BY
Reference information

Primary reference:
11371.1% R. Ruedemann. 1906. Cephalopoda of the Beekmantown and Chazy formations of the Champlain Basin. Bulletin of the New York State Museum, Paleontology 14:389-611 [P. Wagner/K. Koverman/M. Uhen]

Secondary references:

55847 R. F. Flower. 1961. The Phragmocone of Ecdyceras. State Bureau of Mines and Mineral Resources New Mexico Institute of Mining and Technology, Memoir 9:1-27 [B. Kröger/B. Kröger]
15149 P. E. Raymond. 1906. The Chazy Formation and its fauna. Annals of the Carnegie Museum 3(4):498-596 [P. Wagner/P. Wagner]
56059 J. P. Ross. 1963. The Bryozoan Trepostome Batostoma in Chazyan (Ordovician) Strata. Journal of Paleontology 37(4):857-866 [B. Kröger/B. Kröger]
56088 J. R. P. Ross. 1963. New Ordovician species of Chazyan Trepostome and Cryptostome Bryozoa. Journal of Paleontology 37(1):57-63 [B. Kröger/B. Kröger]
56097 J. R. P. Ross. 1963. Ordovician Cryptostome Bryozoa, Standard Chazyan Series, New York and Vermont. Geological Society America Bulletin 74:577-608 [B. Kröger/B. Kröger]