Clorinda-Eoplectodonta Subcommunity of the Rockway Formation (Silurian to of the United States)

Where: Wayne County County, New York (43.1° N, 77.1° W: paleocoordinates 25.9° S, 45.4° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Pterospathodus amorphognathoides zone, Rockway Formation (Clinton Group), Llandovery to Llandovery (443.4 - 427.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: offshore ramp; lithified dolomite and lithified, gray, green shale

• This assemblage represents offshore, well oxygenated mud bottom conditions.

•2003:04:06 Environmenta/sequence calls by SEP based on Brett's work on NY Silurian and the regional stratigraphic context of the Irondequoit (correlative).

• In western New York and Ontario the basal Rockway Formation consists of argillaceous dolostone and gray, dolomitic shale, with a sparse, poorly preserved Costistricklandia fauna. The Rockway Formation changes facies in west-central New York to greenish-gray shale and dolostone previously assigned to undifferentiated lower Irondequoit, and still farther east to the sandy Dawes Dolostone.

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 13045: authorized by Michael Foote, entered by Kimberly Koverman on 17.01.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
 Pisocrinida - Pisocrinidae
Pisocrinus sp.
Pisocrinus sp. de Koninck 1858 Sea lily
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp.
Eucalyptocrinites sp. Goldfuss 1831 Sea lily
Strophomenata
 Orthotetida - Chilidiopsidae
"Coolinia subplana" = Fardenia (Coolinia)
"Coolinia subplana" = Fardenia (Coolinia)
 Strophomenida -
Strophochonetes cornutus
 Strophomenida - Sowerbyellidae
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
 Strophomenida - Strophodontidae
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda Hall 1852
 Strophomenida - Rafinesquinidae
Leptaena ? rhomboidalis
Leptaena ? rhomboidalis Wahlenberg 1818
Leptaena 'rhomboidalis'
Rhynchonellata
 Pentamerida - Clorindidae
Clorinda fornicata
 Spiriferida - Cyrtinopsidae
Boucotinskia sulcata
Boucotinskia sulcata Hisinger 1837
 Spiriferida - Cyrtiidae
Cyrtia meta, "Cyrtia exporrecta" = Cyrtia exporrectus, Eospirifer radiatus
"Cyrtia exporrecta" = Cyrtia exporrectus Wahlenberg 1818
Eospirifer radiatus Sowerby 1834
 Athyridida - Meristellidae
Whitfieldella cylindrica, Whitfieldella intermedia, Whitfieldella nitida
 Atrypida - Atrypinidae
Atrypina rugosa
 Atrypida - Atrypidae
? Atrypa gibbosa, Atrypa reticularis, Plectatrypa nodostriata
Atrypa reticularis Linnaeus 1758
 Protorthida - Skenidiidae
Skenidioides pyramidale
 Orthida - Dicoelosiidae
Dicoelosia biloba
Dicoelosia biloba Linnaeus 1758
 Orthida - Dalmanellidae
Resserella elegantula
 Orthida - Orthidae
? Orthis tenuidens
? Orthis tenuidens
'Orthis' tenuidens
 Orthida - Hesperorthidae
Flabellitesia flabellites
Stenolaemata
 Cryptostomata - Semicosciniidae
Semicoscinium tenuiceps
Cephalopoda
 Ammonitida - Hoplitidae
"Dawsonoceras annulatum" = Orthocera annulata
"Dawsonoceras annulatum" = Orthocera annulata Sowerby 1816 ammonite
 Orthocerida - Orthoceratidae
? Orthoceras abruptum
? Orthoceras abruptum
'Orthoceras' abruptum
Bivalvia
 Ostreida - Pterineidae
Cornellites emaceratus
Ostracoda
 Beyrichiacea - Zygobolbidae
Mastigobolbina punctata, Mastigobolbina trilobita, Mastigobolbina typus, Plethobolbina typicalis
 Palaeocopida - Beyrichiidae
Beyrichia aff. lakemontensis, Dibolbina sp.
Dibolbina sp. Ulrich and Bassler 1923 ostracod
Trilobita
 Phacopida - Calymenidae
Liocalymene clintonensis
 Phacopida - Phacopidae
"? Phacops trisulcatus" = Phacopidella trisulcata
"? Phacops trisulcatus" = Phacopidella trisulcata Hall 1852 trilobite
'Phacops' trisulcatus
 Phacopida - Dalmanitidae
Dalmanites limulurus
 Phacopida - Encrinuridae
Encrinurus ornatus
Chlorophyceae
  - Receptaculitidae
Ischadites sp.
Ischadites sp. Eichwald 1861