Where: Northwest Territories, Canada (62.5° N, 124.8° W: paleocoordinates 6.3° N, 57.9° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Pygodus anserinus-Amorphognathus tvaerensis conodont zone, Esbataottine Formation, Chazyan to Chazyan (470.0 - 449.5 Ma)
• formation-level stratigraphic resolution
Environment/lithology: gray, argillaceous, silty limestone
Size class: macrofossils
Primary reference: R. Ludvigsen. 1975. Ordovician formations and faunas, southern Mackenzie Mountains. Canadian Journal of Earth Sciences 12:663-697 [S. Holland/T. Hanson/J. Ju]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 25310: authorized by Steven Holland, entered by Tori Hanson on 08.09.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Ostracoda | |
Tetradella sp. Ulrich 1890 ostracod | |
Trilobita | |
Cybeloides cf. prima Narraway and Raymond 1906 trilobite | |
Heliomeroides teres, Holia glabra1, Ceraurinella spp., Acanthoparypha sp., Pandaspinapyga sp., Sphaerexochus sp.
Heliomeroides teres Evitt 1951 trilobite
Ceraurinella spp. Cooper 1953 trilobite
Acanthoparypha sp. Whittington and Evitt 1953 trilobite
Pandaspinapyga sp. Esker and Levin 1964 trilobite
Sphaerexochus sp. Beyrich 1845 trilobite | |
Calyptaulax sp. Cooper 1930 trilobite | |
| |
"Carrickia sp." = Phorocephala
"Carrickia sp." = Phorocephala Lu 1965 trilobite | |
Nileoides sp. Raymond 1920 trilobite | |
Remopleurides cf. canadensis Billings 1865 trilobite | |
Amphilichas sp. Raymond 1905 trilobite | |
Dolichoharpes reticulata Whittington 1949 trilobite | |
Ceratocephala cf. triacantheis Whittington and Evitt 1953 trilobite misspelled as 'tricantheis' in reference
| |
Rhynchonellata | |
Mimella aff. globosa Willard 1928 |