Where: Quebec, Canada (50.2° N, 63.7° W: paleocoordinates 26.3° S, 45.4° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Grande Pointe Member (Mingan Formation), Chazyan (470.0 - 457.3 Ma)
• group of beds-level stratigraphic resolution
Environment/lithology: open shallow subtidal; lithified, dolomitic, stromatolitic wackestone and lithified, dolomitic grainstone
Primary reference: J. K. Rigby and A. Desrochers. 1995. Lower and Middle Ordovician lithistid demosponges from the Mingan Islands, Gulf of St. Lawrence, Quebec, Canada. Journal of Paleontology Memoir 69(4):1-35 [S. Peters/S. Peters]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 66135: authorized by Shanan Peters, entered by Shanan Peters on 29.09.2006
Creative Commons license: CC BY (attribution)
Taxonomic list
| Demospongiae | |
|
Lissocoelia ramosa Bassler 1927 demosponge
Hudsonospongia minganensis Raymond and Okulitch 1940 demosponge
Hudsonospongia irregularis Raymond and Okulitch 1940 demosponge | |
Zittelella varians, Zittelella grossa n. sp., Anthaspidella amplia n. sp., Psarodictyum magnificum, Rhopalocoelia clarkii, Archaeoscyphia pulchra, Archaeoscyphia undulata n. sp.
Zittelella varians Billings 1861 demosponge
Zittelella grossa n. sp. Rigby and Desrochers 1995 demosponge
Anthaspidella amplia n. sp. Rigby and Desrochers 1995 demosponge
Psarodictyum magnificum Raymond and Okulitch 1940 demosponge
Rhopalocoelia clarkii Raymond and Okulitch 1940 demosponge
Archaeoscyphia pulchra Bassler 1927 demosponge
Archaeoscyphia undulata n. sp. Rigby and Desrochers 1995 demosponge | |