Valcour Island, Lake Champlain, Crown Point Formation: Chazyan, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Phacopida - Cheiruridae
Sphaerexochus parvus Billings 1865
Raymond 1906
Ceraurus polydorus Billings 1865
Raymond 1906
recombined as Laneites polydorus
Trilobita - Asaphida - Asaphidae
Isotelus canalis (Whitfield 1886)
Raymond 1906
recombined as Isoteloides canalis
Trilobita - Lichida - Lichidae
Amphilichas minganensis (Billings 1865)
Raymond 1906
Trilobita - Corynexochida - Illaenidae
Illaenus incertus Webby 1973
Raymond 1906
recombined as Eastonillaenus incertus
Cephalopoda - Actinocerida - Gonioceratidae
Gonioceras chaziense Ruedemann 1906
Flower 1957
Gastropoda - Euomphalina - Macluritidae
Maclurites magnus (Le Sueur 1818)
Raymond 1906
Tergomya - Scenellidae
Scenella robusta Raymond 1905
Raymond 1905
Bivalvia - Solemyida - Ctenodontidae
Ctenodonta peracuta Raymond 1905
Bivalvia - Mytilida - Modiolopsidae
Whiteavsia expansa Raymond 1906
Bivalvia - Myalinida - Ambonychiidae
Clionychia montrealensis (Billings 1859)
recombined as Cleionychia montrealensis
Ambonychia curvata Raymond 1905
recombined as Ambonychiopsis curvata
Bivalvia - Cyrtodontida - Cyrtodontidae
Cyrtodonta scala Raymond 1906
Bivalvia - Modiomorphida - Modiomorphidae
Endodesma tranceps (Raymond 1916)
Rhynchonellata - Orthida - Orthidae
Orthis perveta Conrad 1843
Raymond 1906
Rhynchonellata - Orthida - Plectorthidae
Hebertella borealis (Billings 1859)
Raymond 1906
recombined as Mimella borealis
Rhynchonellata - Rhynchonellida - Sphenotretidae
Zygospira acutirostris (Hall 1847)
Raymond 1911
recombined as Sphenotreta acutirostris
Strophomenata - Strophomenida - Furcitellidae
Rafinesquina incrassata (Hall 1847)
Raymond 1906
recombined as Dactylogonia incrassata
see common names

Geography
Country:United States State/province:New York
Coordinates: 44.6° North, 73.4° West (view map)
Paleocoordinates:28.1° South, 54.8° 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:group of beds
Stratigraphy comments: "trilobite layer = middle Chazy", in Raymond (1916)
Lithology and environment
Primary lithology: lithified lime mudstone
Secondary lithology: "limestone"
Lithology description: calcilutite to calcisiltite
Environment:reef, buildup or bioherm
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Preservation of anatomical detail:good
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Metadata
Database number:171704
Authorizer:B. Kröger Enterer:B. Kröger
Modifier:B. Kröger Research group:marine invertebrate
Created:2015-07-17 02:02:04 Last modified:2024-03-31 19:20:59
Access level:the public Released:2015-07-17 02:02:04
Creative Commons license:CC BY
Reference information

Primary reference:
55816. P. E. Raymond. 1916. The Pelecypoda of the Chazy Formation. Annals of the Carnegie Museum 328:325-343 [B. Kröger/B. Kröger]

Secondary references:

56037 R. H. Flower. 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 [B. Kröger/B. Kröger/P. Wagner]
15471 P. E. Raymond. 1905. The fauna of the Chazy Limestone. The American Journal of Science 20:353-382 [P. Wagner/P. Wagner]
15149 P. E. Raymond. 1906. The Chazy Formation and its fauna. Annals of the Carnegie Museum 3(4):498-596 [P. Wagner/P. Wagner]
53676 P. E. Raymond. 1911. The Brachiopoda and Ostracoda of the Chazyan. Annals of the Carnegie Museum 7:215-259 [P. Wagner/P. Wagner]