Denley Limestone, Dolgeville: Chatfieldian, 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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Lingulata
- Lingulida
- Pseudolingulidae
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Lingula curta
Conrad 1842
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| recombined as Pseudolingula curta | ||||||||||
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Lingulata
- Lingulida
- Obolidae
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Lingula riciniformis
Hall 1847
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| recombined as Glossina riciniformis | ||||||||||
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Leptobolus insigna
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Rhynchonellata
- Orthida
- Dalmanellidae
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Paucicrura rogata
(Sardeson 1892)
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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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Ostracoda
- Hollinocopida
- Euprimitiidae
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Primitiella unicornis
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Ostracoda
- Leperditellocopida
- Aparchitidae
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Aparchites minutissimus
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| "trentonensis" | ||||||||||
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Ostracoda
- Leperditellocopida
- Primitiidae
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Primitia informal indet. sp.1
Jones and Holl 1923
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Primitia informal indet. sp.2
Jones and Holl 1923
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Ostracoda
- Beyrichicopida
- Bolliidae
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Dicranella bivertex
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Ostracoda
- Podocopida
- Bythocyprididae
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Bythocypris cylindrica
(Hall 1871)
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| recombined as Phelobythocypris cylindrica | ||||||||||
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Ostracoda
- Palaeocopida
- Beyrichiidae
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Beyrichia sp.
M'Coy 1846
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Trilobita
- Olenida
- Olenidae
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Triarthrus becki
Green 1832
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Trilobita
- Phacopida
- Calymenidae
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Flexicalymene senaria
(Conrad 1841)
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| recombined as Flexicalymene (Flexicalymene) senaria | ||||||||||
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Trilobita
- Asaphida
- Asaphidae
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Isotelus gigas
(Dekay 1824)
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| recombined as Asaphus gigas | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York |
| Coordinates: | 43.0° North, 75.0° West (view map) | ||
| Paleocoordinates: | 27.8° South, 53.2° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | small collection |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| Key time interval: | Chatfieldian | Graptolite zone: | Orthograptus ruedemanni |
| Age range of interval: | 453.70000 - 451.10000 m.y. ago |
Stratigraphy
| Geological group: | Lower Trenton | Formation: | Denley Limestone | Member: | Dolgeville |
| Stratigraphic resolution: | member | ||||
| Stratigraphy comments: Triarthrus community; samples restricted to autochthonous black shales, listed as Middle Caradoc/Denmarkian | |||||
Lithology and environment
| Primary lithology: | black poorly lithified calcareous "shale" |
| Lithology description: Alternating layers of thick calcisiltites and thick (up to 7 inches) black shales, and rare fine-grained calcarenites (turbidites) | |
| Environment: | offshore shelf |
| Geology comments: Possibly below oxygen isocline; No algae! | |
Taphonomy
| Modes of preservation: | body,trace |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | life position |
| Articulated whole bodies: | many |
| Size sorting: | poor |
| Fragmentation: | none |
| Temporal resolution: | snapshot |
| Spatial resolution: | autochthonous |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 76093 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Subset of collection #: | 338 | ||
| Created: | 2007-11-13 12:08:30 | Last modified: | 2018-03-25 22:44:26 |
| Access level: | the public | Released: | 2007-11-13 12:08:30 |
| 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] |