Southern Manitoba, Inwood Formation, Sinkhole West of Sandridge (Silurian to of Canada)

Where: Manitoba, Canada (53.2° N, 99.3° W: paleocoordinates 10.0° S, 51.4° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: lower Member (Inwood Formation), Telychian to Telychian (438.5 - 427.4 Ma)

• formation-level stratigraphic resolution

Environment/lithology: yellow dolomite

• Environmental call by T. Hanson.
• Porous, structureless, fine-grained, pale yellowish orange dolomite containing patches of clay and many corals. Flanking the bioherm and truncated by it are coarsely detrital, thin-bedded dolomites.

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 26456: authorized by Steven Holland, entered by Tori Hanson on 15.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Anthozoa
 Stauriida - Amplexidae
Amplexoides severnensis
 Stauriida - Streptelasmatidae
Asthenophyllum inwoodense
 Favositida - Favositidae
Paleofavosites poulseni, Paleofavosites transiens, Favosites cf. niagarensis
Paleofavosites poulseni Teichert 1937 tabulate coral
Paleofavosites transiens Stearn 1956 tabulate coral
Strophomenata
 Orthotetida - Chilidiopsidae
Fardenia ellipsoides
Rhynchonellata
 Athyridida - Hyattidinidae
Hyattidina junea