Second Creek at Alsa Farms - top Irondequoit (Silurian of the United States)
Where: Wayne County, New York (43.2° N, 77.0° W: paleocoordinates 26.9° S, 44.1° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Irondequoit Formation (Clinton Group), Sheinwoodian (433.4 - 430.5 Ma)
Environment/lithology: reef, buildup or bioherm; lithified, shelly/skeletal, gray, argillaceous reef rocks and lithified shale
• Light gray, crystalline limestone. The upper part is more massive than the lower part. Many limestones crinoidal. Toward base limestone somewhat argillaceous. Reeflike bodies very common toward base. Reefs very fossiliferous. Limestone layers separated by thin shale layers. Shales thicker and more abundant toward base. Fauna of shales rich and varied. Most of the fossils listed are from shales.
Primary reference: T. Gillette. 1947. The Clinton of Western and Central New York. New York State Museum Bulletin (341) [L. Ivany/P. Wall]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 81907: authorized by Linda Ivany, entered by Patrick Wall on 18.07.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| unclassified | |
| Trilobita | |
|
Dalmanites limulurus trilobite | |
| Ostracoda | |
|
Mastigobolbina punctata ostracod
Mastigobolbina trilobata ostracod
Mastigobolbina typus ostracod
Plethobolbina typicalis ostracod | |
| Stenolaemata | |
| Chileata | |
"Dictyonella corallifera" = Eodictyonella
"Dictyonella corallifera" = Eodictyonella | |
| Rhynchonellata | |
"Scenidium pyramidalis" = Skenidium
"Scenidium pyramidalis" = Skenidium | |
|
Atrypina disparilis Hall 1852 | |
|
"Atrypa nodostriata" = Eospinatrypa nodostriata Hall 1852
Atrypa reticularis Linnaeus 1758 | |
"Bilobites biloba" = Dicoelosia
"Bilobites biloba" = Dicoelosia | |
"Orthis flabellites" = Dolerorthis flabellites
"Orthis flabellites" = Dolerorthis flabellites Foerste 1889 | |
| Strophomenata | |
|
Leptaena rhomboidalis Wahlenberg 1818 | |
"Stropheodonta convexa" = Strophomena (Strophodonta), "Stropheodonta subplana" = Strophomena (Strophodonta)
"Stropheodonta convexa" = Strophomena (Strophodonta)
"Stropheodonta subplana" = Strophomena (Strophodonta) | |
"Sowerbyella transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Sowerbyella transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818 | |
| Lingulata | |
| Cephalopoda | |
|
Dawsonoceras annulatum Sowerby 1818 | |
| Bivalvia | |
|
Pterinea emacerata oyster | |
| Crinoidea | |
|
Ichthyocrinus laevis Sea lily | |
| Blastoidea | |
|
Stephanocrinus gemmiformis blastoid | |
| Anthozoa | |
|
Enterolasma caliculum horn coral | |
| Scyphozoa | |
|
Conularia niagarensis jellyfish | |