Quarry Near Normal School, Plattsburgh (Ordovician of the United States)

Where: Clinton County, New York (44.7° N, 73.5° W: paleocoordinates 28.1° S, 54.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Crown Point Formation (Chazy Group), Chazyan (470.0 - 457.3 Ma)

• Bed B division 3.

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, black, silty limestone

• mound rocks are dark, silty limestones

Size class: macrofossils

Reposited in the AMNH, NMMNH, YPM

Primary reference: P. E. Raymond. 1908. The Gastropoda of the Chazy Formation. Annals of the Carnegie Museum 4:168-225 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 164475: authorized by Pete Wagner, entered by Pete Wagner on 02.12.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Triplesiidae
Onychoplecia gracilis1 Raymond 1902
Rhynchonellata
 Rhynchonellida - Sphenotretidae
"Rhynchonella acutirostris" = Sphenotreta acutirostris2
"Rhynchonella acutirostris" = Sphenotreta acutirostris2 Hall 1847
 Orthida - Glyptorthidae
Glyptorthis sulcata1 Cooper 1956
Cephalopoda
 Oncocerida - Oonoceratidae
Ooceras seelyi2 Ruedemann 1906
Gastropoda
 Murchisoniina - Lophospiridae
"Gyronema historicum" = Proturritella historicum
"Gyronema historicum" = Proturritella historicum Hudson 1905 snail
 Euomphalina - Raphistomatidae
"Raphistoma immaturum" = Raphistoma striatum, Scalites angulatus
"Raphistoma immaturum" = Raphistoma striatum Emmons 1842 snail
Scalites angulatus Emmons 1842 snail
Trilobita
 Harpetida - Harpetidae
Hibbertia valcourensis2 Shaw 1968 trilobite
see Shaw (1968, p. 53)