Silliman's Fossil Mount Echinoderms (Ordovician of Canada)
Where: Nunavut, Canada (63.7° N, 69.0° W: paleocoordinates 8.7° S, 37.2° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Richmondian (449.6 - 445.5 Ma)
Environment/lithology: dolomitic limestone and calcareous shale
• Environmental call by T. Hanson.
• "Throughout the Mount, the top 50 feet of these beds consists of massive dolomite limestone, the next 75 feet of thin-bedded limestone and dolomite, and the lower 175 feet of calcareous shale with some interbedded limestone."
Size class: macrofossils
Primary reference: A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 24118: authorized by Steven Holland, entered by Tori Hanson on 31.07.2002
Creative Commons license: CC BY (attribution)
Taxonomic list
• From Schuchert; Roy; Bassler 1915.
Show authors, comments, and common names
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Cheirocrinus sp. Eichwald 1856 | |
| Crinoidea | |
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Porocrinus shawi Sea lily
Carabocrinus sp. Billings 1857 Sea lily | |
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Lichenocrinus affinis Sea lily | |