Galt (Silurian of Canada)

Where: Ontario, Canada (43.3° N, 80.3° W: paleocoordinates 28.1° S, 43.4° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Guelph Formation, Ludlow (427.4 - 423.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: open shallow subtidal; dolomite

• "Environment: Probably the Janius Community of the Janius Community Group, as judged from the brachiopods, representing BA 3."

•SEP: the Guelph Formation is a very well known and intensively studied unit for petroleum. It is known among petroleum geologists as a "dolomitic reef" and has been the target of drilling in Ontario and the Michigan basin for many years. There is evidence for subaerial exposure during the development of the these "reefal" buildups that fringe the Michigan basin (Charbonneau, 1990)

• "Dolomite"

Size class: macrofossils

Preservation: cast

Primary reference: J. F. Whiteaves. 1884. On some new, imperfectly characterized or previously unrecorded species of fossils from the Guelph Formations of Ontario. Palaeozoic Fossils 3(1):1-43 [P. Wagner/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 154346: authorized by Pete Wagner, entered by Pete Wagner on 16.02.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only gastropods entered so far, as the taxonomy is 120+ years old.
Gastropoda
 Trochonematoidea - Lophospiridae
"Murchisonia soluta n. sp." = Loxoplocus soluta
"Murchisonia soluta n. sp." = Loxoplocus soluta Whiteaves 1884 snail
 Euomphalina - Euomphalidae
"Pleurotomaria valeria" = Euomphalopterus valeria Billings 1865 snail
Polytropis durhamensis Whiteaves 1895 snail
 Euomphalina - Anomphalidae
Pycnomphalus solarioides Hall 1852 snail
 Euomphalina - Holopeidae
Holopea gracia Billings 1865 snail
 Euomphalina - Elasmonematidae
"Holopea harmonia" = Discordichilus harmonia
"Holopea harmonia" = Discordichilus harmonia Billings 1865 snail
 Euomphalina - Codonocheilidae
Codonocheilus striatum Whiteaves 1884 snail
 Bellerophontida - Bucaniidae
"Tremanotus alpheus" = Tremanotus angustata
"Tremanotus alpheus" = Tremanotus angustata Hall 1852 snail
 Murchisoniina - Eotomariidae
"Murchisonia constricta n. sp." = Turritoma constricta
"Murchisonia constricta n. sp." = Turritoma constricta Whiteaves 1884 snail
 Murchisoniina - Gosseletinidae
"Pleurotomaria galtensis" = Spiroraphe galtensis
"Pleurotomaria galtensis" = Spiroraphe galtensis Billings 1865 snail
 Murchisoniina - Murchisoniidae
Murchisonia boydii2, Murchisonia xanthippe n. sp., "Hormotoma whiteavesi" = Michelia whiteavesi1, "Murchisonia macrospira" = Cyrtostropha macrospira
Murchisonia xanthippe n. sp. Billings 1865 snail
"Hormotoma whiteavesi" = Michelia whiteavesi1 Clarke and Ruedemann 1903 snail
"Murchisonia macrospira" = Cyrtostropha macrospira Hall 1852 snail
 Murchisoniina - Plethospiridae
"Murchisonia vitellia" = Kirkospira vitellia
"Murchisonia vitellia" = Kirkospira vitellia Billings 1865 snail
 Murchisoniina - Hormotomidae
"Murchisonia longispira" = Coelocaulus longispira, "Murchisonia bivittata" = Ptychocaulus bivittata
"Murchisonia longispira" = Coelocaulus longispira Hall 1852 snail
"Murchisonia bivittata" = Ptychocaulus bivittata Hall 1852 snail
 Pleurotomariida - Pleurotomariidae
? Pleurotomaria viola n. sp. Billings 1865 snail