Section B, sample 662 (Silurian of Canada)

Where: Nunavut, Canada (77.5° N, 84.0° W: paleocoordinates 1.3° N, 27.7° W)

• coordinate estimated from map

When: Kockelella variabilis variabilis – Ozarkodina confluens conodont zone, Upper Member (Allen Bay Formation), Gorstian (427.4 - 425.6 Ma)

• PJW: Kockelella variabilis variabilis – Ozarkodina confluens zones are Ludlovian.

• member-level stratigraphic resolution

Environment/lithology: lithified limestone

• At section B (Fig. 2), the lower and upper parts of the Lower Member, Allen Bay Formation, are composed of limestone and dolostone, respectively, with a total thickness of 357 m. The Middle and Upper members of the formation are separated by a 35 m thick interfingering unit of dark grey and black shale of the Cape Phillips Formation. These members are 301 and 279 m in thickness, respectively, and each consists of a lower reefal facies limestone and an upper transitional facies limestone.

•reefal facies limestone

Size class: microfossils

Primary reference: S. Zhang, K. Mirza, and C. R. Barnes. 2016. Upper Ordovician – Upper Silurian conodont biostratigraphy, Devon Island and southern Ellesmere Island, Canadian Arctic Islands, with implications for regional stratigraphy, eustasy, and thermal maturation. Canadian Journal of Earth Sciences 53(9):931-949 [E. Jarochowska/S. Haegele]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 188138: authorized by Emilia Jarochowska, entered by Sarah Haegele on 24.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Panderodontida - Panderodontidae
Panderodus unicostatus Branson and Mehl 1933 conodont
 Ozarkodinida - Kockelellidae
Ctenognathodus sp. Fay 1959 conodont
 Ozarkodinida - Spathognathodontodae
Wurmiella excavata Branson and Mehl 1933 conodont
Subspecies"Wurmiella excavata excavata"