Striispirifer-Amphistrophia community of the Homocrinus beds of the Rochester Sh (Silurian of the United States)

Where: Niagara County County, New York (43.1° N, 79.1° W: paleocoordinates 27.0° S, 44.8° W)

• coordinate based on political unit

• outcrop-level geographic resolution

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

• Homocrinus beds

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; gray mudstone and grainstone

• 2003:04:06 SEP environmental/tectonic/sequence calls based on field knowledge familiarity with stratigraphic context.
• ...sparsely fossiliferous, medium gray shale and mudstones. Interbeds include calcisiltites, and rare calcarenites as well as silty mudstones.

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 12936: authorized by Michael Foote, entered by Kimberly Koverman on 11.01.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Machaerida indet.
indet. machaeridian plates
Trilobita
  -
Trilobita indet. Walch 1771 trilobite
indet. fragments (Dalmanites?)
 Corynexochida - Illaenidae
Bumastus ioxus Hall 1868 trilobite
 Aulacopleurida - Brachymetopidae
Radnoria sp. Owens and Thomas 1975 trilobite
 Phacopida - Dalmanitidae
 Phacopida - Homalonotidae
 Phacopida - Calymenidae
Calymene sp. Brongniart 1822 trilobite
 Lichida - Lichidae
Arctinurus boltoni Bigsby 1825 trilobite
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 Wahlenberg 1818
Leptaena 'rhomboidalis'
 Strophomenida - Amphistrophiidae
Rhynchonellata
 Athyridida - Rhynchospirinidae
 Athyridida - Meristellidae
 Spiriferida - Cyrtiidae
 Atrypida - Atrypidae
Atrypa ? reticularis Linnaeus 1758
Atrypa 'reticularis'
 Atrypida - Atrypinidae
 Rhynchonellida - Rhynchotrematidae
 Orthida - Rhipidomellidae
Dalejina hybrida Sowerby 1839
 Orthida - Dicoelosiidae
Dicoelosia biloba Linnaeus 1758
Craniata
 Craniopsida - Craniopsidae
Bivalvia
 Ostreida - Pterineidae
Gastropoda
 Euomphalina - Platyceratidae
"Naticonema niagarensis" = Platyostoma niagarensis
"Naticonema niagarensis" = Platyostoma niagarensis Hall 1852 snail
Tentaculita
 Cornulitida - Cornulitidae
Cornulites sp. Schlotheim 1820
Cephalopoda
 Orthocerida - Dawsonoceratidae
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
indeterminant encrusting form
Stenolaemata
 Fenestrida - Fenestellidae
Fenestella sp. Lonsdale 1839
  - Phylloporinidae
 Cystoporida - Fistuliporidae
 Cryptostomata - Rhinoporidae
 Trepostomata - Trematoporidae
Graptolithina
 Tuboidea -
Ophiuroidea
 Oegophiurida - Protasteridae
Protaster stellifer Ringueberg 1886 brittle star
Asteroidea
 Pustulosida - Palaeasteridae
Palaeaster niagarensis Hall 1852 sea star
 Rhombifera - Caryocrinitidae
Edrioasteroidea
  - Hemicystitidae
Crinoidea
 Homocrinida - Homocrinidae
Homocrinus parvus Hall 1852 Sea lily
 Flexibilia -
 Sagenocrinida -
 Dendrocrinida - Dendrocrinidae
Dendrocrinus longidactylus Hall 1852 Sea lily
 Monobathrida - Patelliocrinidae
 Diplobathrida -
Heteractinida
 Octactinellida - Astraeospongiidae
"Astraeospongia sp." = Astraeospongium
"Astraeospongia sp." = Astraeospongium Roemer 1860
Anthozoa
 Favositida - Favositidae
Favosites parasiticus tabulate coral