Where: Northwest Territories, Canada (62.4° N, 127.0° W: paleocoordinates 9.1° N, 55.4° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Normalograptus persculptus zone, Whittaker Formation, Hirnantian (445.2 - 443.4 Ma)
• bed-level stratigraphic resolution
Environment/lithology: open shallow subtidal; argillaceous limestone and calcareous shale
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•SEP environmental call based primarily on PBDB ref. 7215. IF age assignment is correct, then this unit is consistent with the last portion of the HST in the upper-most Ord. and immediately prior to TST of lowermost-Sil. and latest Ord. Shallow assignment based on Bathyurus in ref. 7215.
Size classes: macrofossils, mesofossils
Preservation: replaced with silica
Primary reference: J. Jin and B. D. E. Chatterton. 1997. Latest Ordovician-Silurian articulate brachiopods and biostratigraphy of the Avalanche Lake area, southwestern District of Mackenzie, Canada. Palaeontographica Canadiana 13:1-62 [M. Foote/M. Foote/M. Foote]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 26070: authorized by Michael Foote, entered by Michael Foote on 02.10.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Rhynchonellata | |
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Strophomenata | |
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