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

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Myalinida - Ambonychiidae
Clionychia marginalis Raymond 1905
recombined as Cleionychia marginalis
Ambonychia curvata Raymond 1905
recombined as Ambonychiopsis curvata
Strophomenata - Strophomenida - Glyptomenidae
Strophomena prisca Raymond 1905
Raymond 1911
recombined as Glyptomena prisca
Rhynchonellata - Orthida - Plectorthidae
Plectorthis exfoliata (Raymond 1905)
Raymond 1911
recombined as Orthambonites exfoliata
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Camarotoechia pristina Raymond 1905
Raymond 1911
recombined as Rostricellula pristina
Rhynchonellata - Rhynchonellida - Sphenotretidae
Zygospira acutirostris (Hall 1847)
Raymond 1911
recombined as Sphenotreta acutirostris
Lingulata - Lingulida - Obolidae
Lingula brainerdi Raymond 1902
Raymond 1911
recombined as Lingulella brainerdi
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:Day Point
Stratigraphic resolution:group of beds
Stratigraphy comments: "Lower Chazy", in Raymond (1916)
Lithology and environment
Primary lithology: lithified lime mudstone
Secondary lithology: "limestone"
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
Collection method comments: The mounds contain stromatoporoids, bryozoans, corals and sponges.
Metadata
Database number:171706
Authorizer:B. Kröger Enterer:B. Kröger
Research group:marine invertebrate
Created:2015-07-17 02:12:38 Last modified:2024-03-31 19:20:59
Access level:the public Released:2015-07-17 02:12:38
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:

53676 P. E. Raymond. 1911. The Brachiopoda and Ostracoda of the Chazyan. Annals of the Carnegie Museum 7:215-259 [P. Wagner/P. Wagner]