Where: New York (43.0° N, 77.0° W)
• Paleocoordinates: 28.7° S, 94.6° W (Wright 2013)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Williamson Shale Formation (Clinton Group), Llandovery (443.4 - 433.4 Ma)
• Formation includes Willowvale Shales. Listed as Upper Llandovery, C6. Type locality; BA4 Eoplectodonta-Atrypa association
• formation-level stratigraphic resolution
Environment/lithology: deep subtidal shelf; poorly lithified shale and lithified, shelly/skeletal limestone
Size classes: macrofossils, mesofossils
Primary reference: B.Y. Eckert and C. E. Brett. 1989. Bathymetry and paleoecology of Silurian benthic assemblages, late Llandoverian, New York State. Palaeogeography, Palaeoclimatology, Palaeoecology 74:297-326 [P. Novack-Gottshall/P. Hearn]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 77052: authorized by Phil Novack-Gottshall, entered by Paul Hearn on 18.12.2007, edited by Phil Novack-Gottshall
Creative Commons license: CC0 (CC0)
Taxonomic list
Trilobita | |
Dalmanites limulurus trilobite | |
Liocalymene clintoni trilobite | |
Ostracoda | |
| |
Cephalopoda | |
Gastropoda | |
"Hormotoma subulata" = Murchisonia subulata
"Hormotoma subulata" = Murchisonia subulata Conrad 1842 snail | |
Bivalvia | |
Craniata | |
"Pholidops squammiformis" = Craniops
"Pholidops squammiformis" = Craniops | |
Rhynchonellata | |
Dicoelosia biloba Linnaeus 1758 | |
Resserella elegantula Dalman 1828 | |
Dalejina hybrida Sowerby 1839 | |
Atrypa reticularis Linnaeus 1758 | |
Atrypina disparilis Hall 1852 | |
| |
Skenidioides pyramidalis Twenhofel 1928 | |
Strophomenata | |
Leptaena rhomboidalis Wahlenberg 1818 | |
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Eoplectodonta transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818 | |
Strophodonta corrugata Conrad 1842 | |
"Coolinia subplana" = Fardenia (Coolinia)
"Coolinia subplana" = Fardenia (Coolinia) | |
Asteroidea | |
| |
Pterobranchia | |
Dictyonema gracilis graptolite | |
Monograptus clintonensis graptolite | |
| |
Demospongiae | |
Chaetetes lycoperdon demosponge | |
Scyphozoa | |
Conularia niagarensis jellyfish | |
Anthozoa | |
Enterolasma caliculum horn coral |