Akpatok Island, sea level, Ungava Bay, Hudston Strait (Ordovician of Canada)

Where: Northwest Territories, Canada (60.3° N, 68.0° W: paleocoordinates 12.0° S, 37.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Aphelognathus grandis conodont zone, Akpatok Formation, Richmondian (449.6 - 445.5 Ma)

• Unnamed sequence; sea level. Was Edenian - Richmondian

• group of beds-level stratigraphic resolution

Environment/lithology: yellow limestone

• Massive yellow limestone akin to calcite mudstone with cephalopods and gastropods. Thin bands of shelly limestone rich in brachiopods and corals occur in intervals

Size class: macrofossils

Primary reference: T. E. Bolton. 1988. Stromatoporoidea from the Ordovician rocks of central and eastern Canada. Contributions to Canadian paleontology, Geological Survey of Canada Bulletin 379:17-45 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 27194: authorized by Steven Holland, entered by Tori Hanson on 21.11.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Murchisoniina - Subulitidae
Fusispira gigantea n. sp.
Fusispira gigantea n. sp. Wilson 1938 snail
 Euomphalina - Macluritidae
Maclurites ungava n. sp.
Maclurites ungava n. sp. Wilson 1938 snail
Stromatoporoidea
 Labechiida - Rosenellidae
? Cystostroma sp.
? Cystostroma sp. Galloway and St Jean 1957 stromatoporoid sponge