Ile aux Couleuvres (Ordovician of Canada)

Where: Québec, Canada (48.5° N, 72.2° W: paleocoordinates 22.2° S, 44.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Aphelognathus divergens conodont zone, Ile aux Couleuvres Formation, Richmondian (449.6 - 445.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: gray, argillaceous limestone and gray, cherty/siliceous limestone

• "… grey limestone, somewhat argillaceous in certain places, and in others, cherty" (Dresser 1916)

Size class: macrofossils

Reposited in the GSC

Primary reference: S. Desbiens and P. J. Lespérance. 1989. Stratigraphy of the Ordovician of the Lac Saint-Jean and Chicoutimi outliers, Quebec. Canadian Journal of Earth Sciences 26(6):1185-1202 [P. Wagner/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 192338: authorized by Pete Wagner, entered by Pete Wagner on 23.03.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Phacopida - Calymenidae
Flexicalymene retrorsa Foerste 1910 trilobite
Gastropoda
 Bellerophontida - Bellerophontidae
"Oxydiscus perstriatus" = Joleaudella perstriatus
"Oxydiscus perstriatus" = Joleaudella perstriatus Foerste 1924 snail
 Bellerophontida - Sinuitidae
Sinuites cancellatus Hall 1847 snail
 Murchisoniina - Lophospiridae
"? Lophospira tropidophora" = Paupospira tropidophora
"? Lophospira tropidophora" = Paupospira tropidophora Meek 1873 snail
 Murchisoniina - Eotomariidae
Liospira micula Hall and Whitney 1862 snail
Tergomya
 Cyrtonellida - Cyrtolitidae
Cyrtolites ornatus Conrad 1838
 Archinacellida - Archinacellidae
Archinacella laevis n. sp. Foerste 1924
Bivalvia
 Myalinida - Ambonychiidae
Ambonychia spp. Hall 1847 clam
Rhynchonellata
 Atrypida - Anazygidae
Catazyga sp. Hall and Clarke 1893
Anthozoa
 Favositida - Favositidae
 Stauriida - Streptelasmatidae
Grewingkia rustica Billings 1858 horn coral
 Stauriida - Stauriidae