GSC O-106028, Grand-Île (Ordovician of Canada)

Where: Quebec, Canada (45.3° N, 74.1° W: paleocoordinates 29.3° S, 61.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Oepikodus communis conodont zone, Ogdensburg Member (Beauharnois Formation), Cassinian (478.6 - 468.1 Ma)

• Strigigenalis caudata Zone

• bed-level stratigraphic resolution

Environment/lithology: lithified, dolomitic limestone and lithified packstone

• Dolomitic limestone and irregular to lenticular (2-20 cm) beds of bioclasitc packstone and grainstone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the GSC

Primary reference: S. Desbiens, T. E. Bolton, and A.D. McCracken. 1996. Fauna of the lower Beauharnois Formation (Beekmantown Group, Lower Ordovician), Grand île, Quebec. Canadian Journal of Earth Sciences 33(8):1132-1153 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 50062: authorized by Pete Wagner, entered by Pete Wagner on 05.05.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Aulacopleurida - Hystricuridae
Hystricurus cf. deflectus Heller 1954 trilobite
 Proetida - Dimeropygidae
? Ischyrotoma sp. Raymond 1925 trilobite
 Proetida - Bathyuridae
"Goniotelina subrectus" = Acidiphorus trilobite
Jeffersonia sp. Poulson 1927 trilobite
Jeffersonia cf. timon Billings 1865 trilobite
Strigigenalis caudata Billings 1865 trilobite
? Bathyurina sp. Poulsen 1937 trilobite
 Asaphida - Asaphidae
Isoteloides sp. Raymond 1910 trilobite
Isoteloides canalis Whitfield 1886 trilobite
Rhynchonellata
 Orthida - Finkelnburgiidae
Rostroconchia
 Ribeirioida - Technophoridae
Ribeiria calcifera Billings 1865
Gastropoda
 Euomphalina - Macluritidae
""Maclurites" affinis" = Teiichispira affinis
""Maclurites" affinis" = Teiichispira affinis Billings 1865 snail
 Euomphalina - Ophiletidae
"Barnesella sp." = Lecanospira
"Barnesella sp." = Lecanospira Butts 1926 snail
 Euomphalina - Raphistomatidae
Ceratopea canadensis Billings 1865 snail
 Murchisoniina - Hormotomidae
Hormotoma artemesia Billings 1865 snail