Amphistrophia-Dalmanites Subcommunity of the middle beds of the Rochester Shale: Wenlock, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Saccocrinus sp.
Anthozoa - Stauriida - Streptelasmatidae
Enterolasma caliculum
Trilobita - Phacopida - Dalmanitidae
Dalmanites limulurus
Trilobita - Phacopida - Homalonotidae
Trimerus delphinocephalus
Trilobita - Phacopida - Calymenidae
Calymene sp. Brongniart 1822
Trilobita - Corynexochida - Illaenidae
Bumastus sp. Murchison 1839
Lingulata - Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797
Craniata - Craniopsida - Craniopsidae
Craniops linguiformis
Strophomenata - Strophomenida - Sowerbyellidae
Eoplectodonta transversalis (Wahlenberg 1818)
recombined as Eoplectodonta (Eoplectodonta) transversalis
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophia striata (Hall 1843)
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena ? rhomboidalis (Wahlenberg 1818)
recombined as Leptaena (Leptaena) rhomboidalis
Leptaena 'rhomboidalis'
Strophomenata - Orthotetida - Chilidiopsidae
Coolinia subplana
spelled with current rank as Fardenia (Coolinia)
Chileata - Dictyonellida - Eichwaldiidae
Dictyonella corallifera
replaced by Eodictyonella
Rhynchonellata - Spiriferida - Cyrtiidae
Eospirifer radiatus (Sowerby 1834)
Rhynchonellata - Athyridida - Meristellidae
Whitfieldella sp. Hall and Clarke 1893
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Stegerhynchus neglectum
original and current combination Rhynchonella (Stegerhynchus)
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Rhynchotreta americana (Hall 1879)
Rhynchonellata - Orthida - Dalmanellidae
Resserella elegantula (Dalman 1828)
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina hybrida (Sowerby 1839)
Rhynchonellata - Atrypida - Atrypidae
Atrypa ? reticularis (Linnaeus 1758)
original and current combination Anomia reticularis
Atrypa 'reticularis'
Stenolaemata - Cryptostomata - Rhinoporidae
Lichenalia concentrica Hall 1852
Bivalvia
Bivalvia indet. Linnaeus 1758
Bivalvia - Ostreida - Pterineidae
Cornellites emaceratus
Gastropoda - Euomphalina - Platyceratidae
Naticonema niagarensis (Hall 1852)
original and current combination Platyostoma niagarensis
Platyceras sp. Conrad 1840
Cephalopoda
Nautiloidea indet. Agassiz 1847
Cephalopoda - Orthocerida - Dawsonoceratidae
Dawsonoceras sp. Hyatt 1884
Cephalopoda - Orthocerida - Kionoceratidae
Kionoceras sp. Hyatt 1884
Crinoidea - Dendrocrinida - Dendrocrinidae
Dendrocrinus sp. Hall 1852
Pterobranchia - Cyclograptidae
Reticulograptus sp.
see common names

Geography
Country:United States State/province:New York
Coordinates: 43.2° North, 77.6° West (view map)
Paleocoordinates:27.4° South, 43.7° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
10 m.y. bin:Silurian 2
*Period:Early/Lower Silurian *Epoch:Middle Wenlock
Key time interval:Wenlock
Age range of interval:433.40000 - 427.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Clinton Formation:Rochester Shale Member:Lewiston
Stratigraphic resolution:group of beds
Stratigraphy comments: Middle Rochester Shale (Lewiston Member, Submembers C and D)
Lithology and environment
Primary lithology: lithified "shale"
Lithology description: dark shale
Environment:offshore Tectonic setting:foreland basin
Glacial or sequence phase:highstand systems tract
Geology comments: Low to moderate sedimentation rates and a general lack of episodic burial horizons (mud tempestites), unlike other Rochester Shale assemblages. These features are consistent with a relatively low, but not bysaerobic oxygen level, and/or high turbidity environment protected from storms.
Taphonomy
Modes of preservation:body
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Metadata
Database number:12934
Authorizer:M. Foote Enterer:K. Koverman
Modifier:M. Foote Research group:marine invertebrate
Created:2002-01-11 08:56:28 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-01-11 08:56:28
Creative Commons license:CC BY
Reference information

Primary reference:

4294. C. E. Brett. 1999. Wenlockian fossil communities in New York State and adjacent areas: Paleontology and Paleoecology. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities: A Case Study from the Silurian and Lower Devonian 592-637 [M. Foote/K. Koverman/J. Alroy]