Triarthrus community, "Dolgeville facies" of lower Trenton Group, no formation n: Trentonian, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Conodonta
- Protopanderodontida
- Drepanoistodontidae
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Drepanoistodus sp.
Lindstrom 1971
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Drepanoistodus suberectus
(Branson and Mehl 1933)
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| 2 species | ||||||||||
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Ostracoda
- Podocopida
- Bythocyprididae
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Bythocypris cylindrica
(Hall 1871)
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Ostracoda
- Palaeocopida
- Primitiidae
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Primitia sp.
Jones and Holl 1923
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18 %-specimens | |||||||||
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Ostracoda
- Palaeocopida
- Aparchitidae
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Aparchites minutissimus
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15 %-specimens | |||||||||
| Aparchites minutissimus trentonensis | ||||||||||
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Ostracoda
- Palaeocopida
- Euprimitiidae
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Primitiella unicornis
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45 %-specimens | |||||||||
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Ostracoda
- Palaeocopida
- Bolliidae
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Dicranella bivertex
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Trilobita
- Asaphida
- Asaphidae
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Isotelus gigas
(Dekay 1824)
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Trilobita
- Olenida
- Olenidae
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Triarthrus becki
Green 1832
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6 %-specimens | |||||||||
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene senaria
(Conrad 1841)
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Cephalopoda
- Dissidocerida
- Geisonoceratidae
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Geisonoceras tenuitextum
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Bivalvia
- Lyrodesmatidae
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Lyrodesma sp.
Conrad 1841
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Rhynchonellata
- Orthida
- Dalmanellidae
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Paucicrura rogata
(Sardeson 1892)
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Lingulata
- Lingulida
- Pseudolingulidae
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Lingula curta
Conrad 1842
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Lingulata
- Lingulida
- Obolidae
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Leptobolus insignis
Hall 1871
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3 %-specimens | |||||||||
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Lingula reciniformis
(Hall 1847)
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York |
| Coordinates: | 43.2° North, 75.5° West (view map) | ||
| Paleocoordinates: | 27.4° South, 53.4° West | ||
| Basis of coordinate: | based on political unit |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| *Period: | Middle Ordovician | *Local age/stage: | Trenton |
| Key time interval: | Trentonian | ||
| Age range of interval: | 457 - 449.8 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Geological group: | Trenton | Formation: | Dolgeville Facies | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: "Dolgeville facies of lower Trenton Group. M. Ord. (Trenton)". PJW: M6A | |||||
Lithology and environment
| Primary lithology: | black calcareous "shale" |
| Environment: | slope |
| Geology comments: "alternating black sh and calcisiltite. BA6. deep water slope transitional to black shale basin. slope. low oxygen conc." | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:"Titus and Cameron, 1976" | |
Metadata
| Database number: | 338 | ||
| Authorizer: | J. Sepkoski, P. Wagner | Enterer: | M. Sommers, P. Wagner |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Collections that are a subset of this one: | |||
| Created: | 1998-11-20 10:07:18 | Last modified: | 2018-08-28 22:22:07 |
| Access level: | the public | Released: | 1998-11-20 10:07:18 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 25788. | R. Titus and B. Cameron. 1976. Fossil communities of the lower Trenton Group (Middle Ordovician) of central and northwestern New York State. Journal of Paleontology 50:1209-1225 [P. Novack-Gottshall/P. Hearn] |