Valcour Island, Lake Champlain, "Middle Chazy Limestone": Chazyan, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Orthocerida
- Proteoceratidae
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Spyroceras clintoni
(Miller 1877)
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Ruedemann 1906 | |||||||||
| recombined as Stereospyroceras clintoni | ||||||||||
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Cyrtactinoceras boycii
(Whitfield 1886)
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Ruedemann 1906 | |||||||||
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras vagum
Ruedemann 1906
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Ruedemann 1906 | |||||||||
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Orthoceras progressum
Ruedemann 1906
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Ruedemann 1906 | |||||||||
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Orthoceras lentum
Ruedemann 1906
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Ruedemann 1906 | |||||||||
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Orthoceras modestum
Ruedemann 1906
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Ruedemann 1906 | |||||||||
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Cephalopoda
- Oncocerida
- Oonoceratidae
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Ooceras perkinsi
Ruedemann 1906
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Ruedemann 1906 | |||||||||
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Cephalopoda
- Oncocerida
- Valcouroceratidae
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Valcouroceras elongatum n. sp.
Flower 1952
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1 specimen | |||||||||
| holotype: USNM, no catalogue number given | ||||||||||
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Cephalopoda
- Tarphycerida
- Tarphyceratidae
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Tarphyceras multicameratum
Ruedemann 1906
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Ruedemann 1906 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York | County: | Clinton |
| 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: | small collection |
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: " Middle Chazy limestone [...] " (Flower, 1952 p. 54). This may be in the Crown Point Fm. but is does not have to. The beds of the middle part of the Chazy gp. are Marmor to Ashby in age according to Kapp & Stearn (1975, J. Paleont. 49(1)).
"dove coloured limestone" Ruedemann (1906) | |||||
Lithology and environment
| Primary lithology: | "limestone" | ||
| Environment: | carbonate indet. | Tectonic setting: | foreland basin |
Taphonomy
| Modes of preservation: | body,cast |
| Size of fossils: | macrofossils,mesofossils |
| Temporal resolution: | time-averaged |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 89105 | ||
| Authorizer: | B. Kröger | Enterer: | T. Liebrecht, B. Kröger |
| Modifier: | B. Kröger | Research group: | marine invertebrate |
| Created: | 2009-05-05 03:54:54 | Last modified: | 2024-03-31 19:20:59 |
| Access level: | the public | Released: | 2009-05-05 03:54:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 29843. | R. H. Flower. 1952. New Ordovician Cephalopods from Eastern North America. Journal of Paleontology 26(1):24-59 [B. Kröger/T. Liebrecht] |
Secondary references:
| 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] |