Southern Manitoba, East Arm Dolomite, East End of Big Island, Moose Lake (Silurian to of Canada)

Where: Manitoba, Canada (53.8° N, 100.3° W: paleocoordinates 9.1° S, 51.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: East Arm Dolomite Formation (Interlake Group), Telychian to Telychian (438.5 - 427.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: gray dolomite

• Type section is dolomite, light olive-gray, very fine grained, thick to medium bedded, local concentric bedding caused by sediment-trapping algae, salt crystal moulds.

Size class: macrofossils

Primary reference: C. W. Stearn. 1956. Stratigraphy and palaeontology of the Interlake Group and Stonewall Formation of Southern Manitoba. Geological Survey of Canada Memoir 281:1-162 [S. Holland/T. Hanson/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26675: authorized by Steven Holland, entered by Tori Hanson on 23.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Favositida - Favositidae
Favosites cf. favosus
Favosites cf. favosus Goldfuss 1826 tabulate coral
 Heliolitida - Halysitidae
Halysites catenularia
Halysites catenularia Linnaeus 1767 tabulate coral
 Stauriida - Streptelasmatidae
Asthenophyllum inwoodense
Stromatoporoidea
 Clathrodictyida - Actinodictyidae
cf. Actinodictyon keelei
cf. Actinodictyon keelei stromatoporoid sponge
Ostracoda
 Leperditicopida - Isochilinidae
Dihogmochilina latimarginata
 Leperditicopida - Leperditiidae
Leperditia phaseola
Strophomenata
 Strophomenida - Leptostrophiidae
Brachyprion cf. robustus
Brachyprion cf. robustus Twenhofel 1928
Rhynchonellata
 Atrypida - Atrypinidae
Clintonella bailliei
Gastropoda
 Murchisoniina - Hormotomidae
Coelocaulus sp.
Coelocaulus sp. Oehlert and Oehlert 1888 snail