Eids Formation, Bathurst Island and Neighboring Islands (Devonian of Canada)

Where: Nunavut, Canada (76.0° N, 99.0° W: paleocoordinates 8.7° S, 19.8° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Eids Formation, Emsian (407.6 - 393.3 Ma)

• Ormiston's age assignment is based mainly on trilobites found on eastern side of Bathurst Island. He states that formation may be of different age elsewhere.

• formation-level stratigraphic resolution

Environment/lithology: offshore shelf; limestone and mudstone

• SEP: Trettin (1978) concluded that the Eids Formation accumulated in environments ranging from upper slope to inner, subitdal shelf
• "dark limestones, shales, and mudstones which conformably underlie the Blue Fiord Formation at Blue Fiord, Ellesemere Island and over most of Bathurst Island..."

Primary reference: A. R. Ormiston. 1967. Lower and Middle Devonian trilobites of the Canadian arctic islands. Geological Survey of Canada Bulletin 153:1-148 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26621: authorized by Michael Foote, entered by Michael Foote on 18.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Ormiston mentions selected fossils in connection with discussion of age of Eids Formation. Presumably not a complete faunal list.
Show authors, comments, and common names
Cephalopoda
 Agoniatitida - Mimagoniatitidae
Mimagoniatites sp.
Mimagoniatites sp. Eichenberg 1930 ammonite
Trilobita
 Corynexochida - Styginidae
Platyscutellum brevicephalus
 Odontopleurida - Odontopleuridae
Leonaspis eremia
 Harpetida - Harpetidae
Harpes cf. macrocephalus
Harpes cf. macrocephalus Goldfuss 1839 trilobite
 Proetida - Tropidocoryphidae
"Cornuproetus tozeri" = Eremiproetus tozeri, Astycoryphe aff. cimelia
"Cornuproetus tozeri" = Eremiproetus tozeri Ormiston 1967 trilobite
 Proetida - Proetidae
Dechenella sp.
Dechenella sp. Kayser 1880 trilobite
 Proetida - Otarionidae
Otarion balanops
Otarion balanops Erben 1953 trilobite
 Proetida - Aulacopleuridae
Aulacopleura (Paraaulacopleura) cf. beyrichi