Williamson and Willowvale Shales, Salmon Creek, BA4: Llandovery, New York
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Asteroidea
- Hadrosida
- Palaeasteridae
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? Palaeaster sp.
Hall 1852
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| Originall Paleaster? Assumed spelling error | ||||||||||
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Pterobranchia
- Graptoloidea
- Monograptidae
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Monograptus clintonensis
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Pterobranchia
- Graptoloidea
- Retiolitidae
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Retiolites geinitzianus
Barrande 1850
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| "venosus" | ||||||||||
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Pterobranchia
- Dendroidea
- Acanthograptidae
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Dictyonema gracilis
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Cephalopoda
- Orthocerida
- Orthoceratidae
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Orthoceras bassleri
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Gastropoda
- Murchisoniina
- Murchisoniidae
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Hormotoma subulata
(Conrad 1842)
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| original and current combination Murchisonia subulata | ||||||||||
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Bivalvia
- Solemyida
- Ctenodontidae
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Ctenodonta mactriformis
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Craniata
- Craniopsida
- Craniopsidae
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Pholidops squammiformis
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| synonym of Craniops | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Rhynchonellidae
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"Rhynchonella" bidens
(Hall 1852)
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| PJW: This is a Jurassic species. | ||||||||||
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Hedeina eudora
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Eospirifer radiatus
(Sowerby 1834)
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Cyrtia meta
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa reticularis
(Linnaeus 1758)
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| original and current combination Anomia reticularis | ||||||||||
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Plectatrypa nodostriata
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Rhynchonellata
- Atrypida
- Atrypinidae
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Atrypina disparilis
(Hall 1852)
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Rhynchonellata
- Athyridida
- Meristellidae
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Whitfieldella cf. oblata
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Rhynchonellata
- Orthida
- Orthidae
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Orthis tenuidens
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis flabella
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Rhynchonellata
- Orthida
- Dicoelosiidae
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Dicoelosia biloba
(Linnaeus 1758)
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Rhynchonellata
- Orthida
- Rhipidomellidae
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Dalejina hybrida
(Sowerby 1839)
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Rhynchonellata
- Orthida
- Dalmanellidae
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Resserella elegantula
(Dalman 1828)
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Rhynchonellata
- Protorthida
- Skenidiidae
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Skenidioides pyramidalis
(Twenhofel 1928)
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena rhomboidalis
(Wahlenberg 1818)
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| recombined as Leptaena (Leptaena) rhomboidalis | ||||||||||
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Strophomenata
- Strophomenida
- Chonetidae
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"Chonetes" cornutus
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Strophomenata
- Strophomenida
- Strophodontidae
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Strophodonta corrugata
(Conrad 1842)
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| recombined as Gunnarella corrugata | ||||||||||
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Strophomenata
- Strophomenida
- Sowerbyellidae
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Eoplectodonta transversalis
(Wahlenberg 1818)
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| recombined as Eoplectodonta (Eoplectodonta) transversalis | ||||||||||
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Strophomenata
- Orthotetida
- Chilidiopsidae
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Coolinia subplana
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| spelled with current rank as Fardenia (Coolinia) | ||||||||||
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Trilobita
- Phacopida
- Calymenidae
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Liocalymene clintoni
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Trilobita
- Phacopida
- Dalmanitidae
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Dalmanites limulurus
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Ostracoda
- Zygobolbidae
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Mastigobolbina punctata
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Mastigobolbina trilobata
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Mastigobolbina typus
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Ostracoda
- Palaeocopida
- Beyrichiidae
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Dibolbina sp.
Ulrich and Bassler 1923
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| "new" | ||||||||||
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Scyphozoa
- Conulariida
- Conulariidae
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Conularia niagarensis
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Anthozoa
- Stauriida
- Streptelasmatidae
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Enterolasma caliculum
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Demospongiae
- Hadromerida
- Suberitidae
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Chaetetes lycoperdon
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | New York |
| Coordinates: | 43.0° North, 77.0° West (view map) | ||
| Paleocoordinates: | 24.9° South, 46.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Silurian | Epoch: | Llandovery |
| 10 m.y. bin: | Silurian 1 | ||
| Key time interval: | Llandovery | ||
| Age range of interval: | 443.80000 - 433.40000 m.y. ago |
Stratigraphy
| Geological group: | Clinton | Formation: | Williamson Shale | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: Formation includes Willowvale Shales. Listed as Upper Llandovery, C6. Type locality; BA4 Eoplectodonta-Atrypa association | |||||
Lithology and environment
| Primary lithology: | poorly lithified "shale" |
| Secondary lithology: | shelly/skeletal lithified "limestone" |
| Lithology description: Olive gray to bluish gray shales interbedded with shell-rich limestone tempestites | |
| Environment: | deep subtidal shelf |
Taphonomy
| Modes of preservation: | body |
| Degree of concentration: | -single event |
| Size of fossils: | macrofossils,mesofossils |
| Spatial orientation: | life position |
| Articulated whole bodies: | some |
| Encrustation: | occasional |
| Temporal resolution: | snapshot |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Type locality; BA4 Eoplectodonta-Atrypa association | |
Metadata
| Database number: | 77052 | ||
| Authorizer: | P. Novack-Gottshall | Enterer: | P. Hearn, P. Novack-Gottshall |
| Modifier: | P. Novack-Gottshall | Research group: | marine invertebrate |
| Created: | 2007-12-18 08:07:26 | Last modified: | 2008-06-23 12:51:49 |
| Access level: | the public | Released: | 2007-12-18 08:07:26 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 26081. | B.Y. Eckert and C. E. Brett. 1989. Bathymetry and paleoecology of Silurian benthic assemblages, late Llandoverian, New York State. Palaeogeography, Palaeoclimatology, Palaeoecology 74:297-326 [P. Novack-Gottshall/P. Hearn] |
Secondary references:
| 27157 | W. J. Arkell, W. M. Furnish, B. Kummel, A. K. Miller, R. C. Moore, O. H. Schindewolf, P. C. Sylvester-Bradley and C.W. Wright. 1957. Cephalopoda - Ammonoidea. Treatise on Invertebrate Paleontology K(3):1-490 [A. Hendy/A. Hendy] |