Avalanche Lake AV4B sample 107.4 (Ordovician of Canada)

Where: Northwest Territories, Canada (63.2° N, 126.3° W: paleocoordinates 8.0° N, 55.8° W)

• coordinate estimated from map

• hand sample-level geographic resolution

When: Whittaker Formation, Late/Upper Ordovician (458.4 - 443.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified, argillaceous limestone

Size class: microfossils

Preservation: original phosphate

Collection methods: bulk, chemical, acetic, sieve

Primary reference: G. S. Nowlan, A. D. McCracken, and B. D. E. Chatterton. 1988. Conodonts from Ordovician-Silurian boundary strata, Whittaker Formation, Mackenzie Mountains, Northwest Territories. Geological Survey of Canada Bulletin 373:1-99 [E. Jarochowska/E. Jarochowska]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 180242: authorized by Emilia Jarochowska, entered by Emilia Jarochowska on 12.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Conodonta
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus Branson and Mehl 1933 conodont
? Paroistodus "sp. A" Lindström 1971 conodont
 Ozarkodinida -
 Prioniodontida -
 Prioniodontida - Strachanognathidae
Scabbardella altipes Hennigsmoen 1948 conodont
 Panderodontida - Panderodontidae
Belodina confluens Sweet 1979 conodont
Panderodus gracilis Branson and Mehl 1933 conodont
Panderodus rhamphoides Aldridge and Mohamed 1982 conodont
? Pseudobelodina dispansa Glenister 1957 conodont
 Belodellida -
Besselodus borealis Nowlan et al. 1988 conodont