Champlain Valley, Fort Cassin Fm., "Cassian Stage," : Early/Lower Ordovician, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
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Conodonta indet.
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Rhynchonellata
- Orthida
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Orthida indet.
Schuchert and Cooper 1932
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| 22 genera | ||||||||||
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Cephalopoda
- Tarphycerida
- Tarphyceratidae
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Eurystomites sp.
Schröder 1891
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Tarphyceras sp.
Hyatt 1894
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Cephalopoda
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Nautiloidea indet.
Agassiz 1847
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Gastropoda
- Archaeogastropoda
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? Archaeogastropoda indet.
Thiele 1925
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| originally entered as "? Archaeogastropoda indet." | ||||||||||
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Gastropoda
- Murchisoniina
- Hormotomidae
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Hormotoma sp.
(Salter 1859)
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| originally entered as "Hormotona sp." | ||||||||||
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Ostracoda
- Leperditicopida
- Isochilinidae
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Isochilina sp.
(Jones 1858)
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Trilobita
- Asaphida
- Asaphidae
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Isoteloides sp.
Raymond 1910
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Trilobita
- Proetida
- Bathyuridae
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Bolbocephalus sp.
Whitfield 1890
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York |
| Coordinates: | 43.9° North, 73.4° West (view map) | ||
| Paleocoordinates: | 31.2° South, 64.7° West | ||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Ordovician | Epoch: | Early/Lower Ordovician |
| 10 m.y. bin: | Ordovician 1-2 | ||
| *Period: | Early/Lower Ordovician | ||
| Key time interval: | Early/Lower Ordovician | ||
| Age range of interval: | 485.40000 - 470.00000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Fort Cassin | Member: | Sciota | ||
| Stratigraphy comments: "L. Ord. overlies Fort Ann Fm." |
Lithology and environment
| Primary lithology: | dolomitic,gray "limestone" |
| Environment: | shallow subtidal indet. |
| Geology comments: "med. to dark gray dolomitic ls w/ lighter gray coarse calcarenite lenses and interbedded tan-weathering fine-grained dolostone. nearshore (?BA1-2) more offshore than Fort Ann (BA2)." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
| Taxonomic list comments:"D.W.Fisher 1982. Camb and Ord strat and paleon of the Champlain Valley ppA1-A28. in Y. Globensky (ed) 3rd N.Am. Paleont. Conv Field Trips Guidebook, Montreal, Quebec." | |
Metadata
| Database number: | 290 | ||
| Authorizer: | J. Sepkoski | Enterer: | M. Sommers |
| Modifier: | J. Ju | Research group: | marine invertebrate |
| Created: | 1998-11-20 10:07:18 | Last modified: | 2017-01-02 03:17:19 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 60923. | D. W. Fisher. 1982. Cambrian and Ordovician stratigraphy and paleontology of the Champlain Valley. In Y. Globensky (ed.), 3rd N.Am. Paleontological Convention Field Trips Guidebook, Montreal, Quebec A1-A28 [M. Uhen/J. Ju/M. Uhen] |