Phoenix Lock Excavation - Williamson (Silurian of the United States)

Where: Oswego County, New York (43.2° N, 76.3° W: paleocoordinates 25.7° S, 45.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Williamson Formation (Clinton Group), Telychian (438.5 - 433.4 Ma)

• Based on comparison with nearby drill core.

• formation-level stratigraphic resolution

Environment/lithology: marine; lithified, green, blue shale and lithified, shelly/skeletal grainstone

• Green fissile shale interbedded with dark bluish gray crumbly shale. Limestone layers are common. Some are compsed entirely of sowerbyella, some largely of Atrypa, others contain a variety of fossils.

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 82554: authorized by Linda Ivany, entered by Patrick Wall on 28.07.2008, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Pterobranchia
 Graptoloidea - Retiolitidae
Retiolites geinitzianus Barrande 1850 graptolite
venosus
 Graptoloidea - Monograptidae
 Dendroidea - Acanthograptidae
Ostracoda
 Palaeocopida - Zygobolbidae
 Palaeocopida - Beyrichiidae
Trilobita
 Phacopida - Dalmanitidae
 Phacopida - Calymenidae
Rhynchonellata
 Atrypida - Atrypidae
"Atrypa nodostriata" = Eospinatrypa nodostriata Hall 1852
Atrypa reticularis Linnaeus 1758
 Atrypida - Atrypinidae
 Spiriferida - Cyrtiidae
Cyrtia meta, "Spirifer radiatus" = Eospirifer radiatus
"Spirifer radiatus" = Eospirifer radiatus Sowerby 1834
 Rhynchonellida - Rhynchonellidae
 Rhynchonellida - Leptocoeliidae
"Coelospira sulcata" = Eocoelia sulcata
"Coelospira sulcata" = Eocoelia sulcata Prouty 1923
 Orthida - Orthidae
 Orthida - Dicoelosiidae
"Bilobites biloba" = Dicoelosia
"Bilobites biloba" = Dicoelosia
 Orthida - Dalmanellidae
 Protorthida - Skenidiidae
"Scenidium pyramidale" = Skenidium
"Scenidium pyramidale" = Skenidium
Strophomenata
 Strophomenida - Chonetidae
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis Wahlenberg 1818
 Strophomenida - Sowerbyellidae
"Sowerbyella transversalis" = Eoplectodonta (Eoplectodonta) transversalis
"Sowerbyella transversalis" = Eoplectodonta (Eoplectodonta) transversalis Wahlenberg 1818
 Strophomenida - Strophodontidae
"Stropheodonta corrugata" = Strophodonta corrugata
"Stropheodonta corrugata" = Strophodonta corrugata Conrad 1842
Craniata
 Craniopsida - Craniopsidae
"Pholidops squamiformis" = Craniops
"Pholidops squamiformis" = Craniops
Gastropoda
 Murchisoniina - Murchisoniidae
"Hormotoma subulata" = Murchisonia subulata
"Hormotoma subulata" = Murchisonia subulata Conrad 1842 snail
Bivalvia
 Solemyida - Ctenodontidae
Cephalopoda
 Orthocerida - Orthoceratidae
Anthozoa
 Stauriida - Streptelasmatidae
Buthotrephis gracilis
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