Amphistrophia-Dalmanites Subcommunity of the middle beds of the Rochester Shale (Silurian of the United States)

Where: New York (43.2° N, 77.6° W)

• Paleocoordinates: 27.9° S, 80.3° W (Wright 2013)

• coordinate based on political unit

• local area-level geographic resolution

When: Lewiston Member (Rochester Shale Formation), Wenlock (433.4 - 427.4 Ma)

• Middle Rochester Shale (Lewiston Member, Submembers C and D)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified shale

• 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.
• dark shale

Primary reference: 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]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 12934: authorized by Michael Foote, entered by Kimberly Koverman on 11.01.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Saccocrinus sp.
Anthozoa
 Stauriida - Streptelasmatidae
Enterolasma caliculum
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus neglectum
 Rhynchonellida - Trigonirhynchiidae
Rhynchotreta americana
 Athyridida - Meristellidae
Whitfieldella sp.
Whitfieldella sp. Hall and Clarke 1893
 Atrypida - Atrypidae
Atrypa ? reticularis
Atrypa ? reticularis Linnaeus 1758
Atrypa 'reticularis'
 Spiriferida - Cyrtiidae
Eospirifer radiatus
Eospirifer radiatus Sowerby 1834
 Orthida - Rhipidomellidae
Dalejina hybrida
Dalejina hybrida Sowerby 1839
 Orthida - Dalmanellidae
Resserella elegantula
Chileata
 Dictyonellida - Eichwaldiidae
"Dictyonella corallifera" = Eodictyonella
"Dictyonella corallifera" = Eodictyonella
Strophomenata
 Orthotetida - Chilidiopsidae
"Coolinia subplana" = Fardenia (Coolinia)
"Coolinia subplana" = Fardenia (Coolinia)
 Strophomenida - Sowerbyellidae
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
 Strophomenida - Rafinesquinidae
Leptaena ? rhomboidalis
Leptaena ? rhomboidalis Wahlenberg 1818
Leptaena 'rhomboidalis'
 Strophomenida - Amphistrophiidae
Amphistrophia striata
Lingulata
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
Craniata
 Craniopsida - Craniopsidae
Craniops linguiformis
Stenolaemata
 Cryptostomata - Rhinoporidae
Lichenalia concentrica
Gastropoda
 Euomphalina - Platyceratidae
Platyceras sp., "Naticonema niagarensis" = Platyostoma niagarensis
Platyceras sp. Conrad 1840 snail
"Naticonema niagarensis" = Platyostoma niagarensis Hall 1852 snail
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
 Orthocerida - Kionoceratidae
Kionoceras sp.
Kionoceras sp. Hyatt 1884
 Orthocerida - Dawsonoceratidae
Dawsonoceras sp.
Dawsonoceras sp. Hyatt 1884
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
 Ostreida - Pterineidae
Cornellites emaceratus
Trilobita
 Corynexochida - Illaenidae
Bumastus sp.
Bumastus sp. Murchison 1839 trilobite
 Phacopida - Calymenidae
Calymene sp.
Calymene sp. Brongniart 1822 trilobite
 Phacopida - Homalonotidae
Trimerus delphinocephalus
 Phacopida - Dalmanitidae
Dalmanites limulurus
Crinoidea
 Dendrocrinida - Dendrocrinidae
Dendrocrinus sp.
Dendrocrinus sp. Hall 1852 Sea lily
Pterobranchia
  - Cyclograptidae
Reticulograptus sp.