Avalanche Lake AV4B sample 111 (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 - 443.8 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 180244: authorized by Emilia Jarochowska, entered by Emilia Jarochowska on 12.07.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Zanclodus levigatus
Conodonta
 Prioniodontida -
Oulodus rohneri, Pseudooneotodus aff. beckmanni
Pseudooneotodus aff. beckmanni Bischoff and Sannemann 1958 conodont
 Prioniodontida - Strachanognathidae
Decoriconus costulatus, Scabbardella altipes
Scabbardella altipes Hennigsmoen 1948 conodont
 Belodellida - Belodellidae
? Walliserodus rallus, Coelocerodontus trigonius
? Walliserodus rallus Nowlan et al. 1988 conodont
Coelocerodontus trigonius Ethington 1959 conodont
 Belodellida -
Besselodus borealis
Besselodus borealis Nowlan et al. 1988 conodont
 Panderodontida - Panderodontidae
? Pseudobelodina dispansa, ? Pseudobelodina cf. dispansa, ? Panderodus gibber, ? Panderodus liratus, ? Panderodus "n.sp. A", Panderodus rhamphoides, Panderodus gracilis
? Pseudobelodina dispansa Glenister 1957 conodont
? Pseudobelodina cf. dispansa Glenister 1957 conodont
? Panderodus "n.sp. A" Ethington 1959 conodont
Panderodus rhamphoides Aldridge and Mohamed 1982 conodont
Panderodus gracilis Branson and Mehl 1933 conodont
 Ozarkodinida -
Plectodina tenuis
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus, ? Paroistodus "sp. A"
Drepanoistodus suberectus Branson and Mehl 1933 conodont
? Paroistodus "sp. A" Lindström 1971 conodont
 Protopanderodontida - Protopanderodontidae
Staufferella divisa, Protopanderodus liripipus
Protopanderodus liripipus Kennedy et al. 1979 conodont