Amphistrophia-Coolinia Comm., Rochester Sh., Lewiston Mbr., Subm. C, Wolcott, NY (Silurian of the United States)

Where: New York (43.2° N, 76.8° W: paleocoordinates 27.0° S, 44.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Lewiston Member (Rochester Shale Formation), Sheinwoodian (433.4 - 430.5 Ma)

• Age based on correlation chart, Fig. 44.2. Submember C of Lewiston Member; about 11 m below top, based on bulk slab samples.

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; gray shale

• "Overall, it appears to represent a suite of eurytopic organisms...absence of most intermediate and high level suspension feeders and dominance of flattened bracs and vagrant detritivores (trilobites) suggests soft, unstalbe substrate and probably relatively high turbidity...low oxygen...environments ranging from relatively deep offshore areas to more proximal shallow shelf below wave base (BA 3-4 or even 5)."

•2003:04:06 SEP environmental/tectonic/sequence calls based on field knowledge familiarity with stratigraphic context.

• "occurs on bedding planes in otherwise sparsely fossiliferous medium to dark gray [not black] shales"

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 26864: authorized by Michael Foote, entered by Michael Foote on 06.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Saccocrinus sp.
Crinoidea
 Dendrocrinida - Dendrocrinidae
Dendrocrinus sp.
Dendrocrinus sp. Hall 1852 Sea lily
Rhynchonellata
 Spiriferida - Cyrtiidae
Eospirifer radiatus
Eospirifer radiatus Sowerby 1834
 Athyridida - Meristellidae
Whitfieldella sp.
Whitfieldella sp. Hall and Clarke 1893
 Atrypida - Atrypidae
Atrypa "reticularis"
Atrypa "reticularis" Linnaeus 1758
 Orthida - Rhipidomellidae
Dalejina hybrida
Dalejina hybrida Sowerby 1839
 Rhynchonellida - Trigonirhynchiidae
Rhynchotreta americana
 Rhynchonellida - Rhynchotrematidae
Stegerhynchus neglectum
Strophomenata
 Strophomenida - Sowerbyellidae
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
 Strophomenida - Amphistrophiidae
Amphistrophia striata
 Strophomenida - Rafinesquinidae
Leptaena "rhomboidalis"
Leptaena "rhomboidalis" Wahlenberg 1818
 Orthotetida - Chilidiopsidae
"Coolinia subplana" = Fardenia (Coolinia)
"Coolinia subplana" = Fardenia (Coolinia)
Lingulata
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
Craniata
 Craniopsida - Craniopsidae
Craniops linguiformis
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Ostreida - Pterineidae
Cornellites emaceratus
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
orthocone
Gastropoda
 Euomphalina - Platyceratidae
"Naticonema niagarensis" = Platyostoma niagarensis, Platyceras sp.
"Naticonema niagarensis" = Platyostoma niagarensis Hall 1852 snail
Platyceras sp. Conrad 1840 snail
Trilobita
 Phacopida - Dalmanitidae
Dalmanites limulurus
 Phacopida - Calymenidae
Calymene sp.
Calymene sp. Brongniart 1822 trilobite
 Phacopida - Homalonotidae
Trimerus delphinocephalus