Mill Bay Member, Vaureal Formation - Oil Creek, Anticosti Island (Ordovician of Canada)

Where: Quebec, Canada (49.8° N, 63.6° W: paleocoordinates 24.0° S, 40.2° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Mill Bay Member (Vaureal Formation), Rawtheyan (455.8 - 445.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified, gray grainstone and lithified, hardground, gray lime mudstone

• medium-bedded, yellow to light grey micrites, grainstones, and intramicrites with local hardgrounds. These limestones are interbedded with thin shales and mudstones. Cyclocystoids were collected in situ from the upper surface of a hardground

Size class: macrofossils

Preservation: original calcite

Reposited in the GSC

• GSC 35098; type specimen of Nicholsodiscus anticostiensis

Primary reference: A. Glass, W. I. Ausich, and P. Copper. 2003. New cyclocystoid (phylum echinodermata) from Anticosti Island, Quebec, and its bearing on cyclocystoid life modes. Journal of Paleontology 77(5):949-957 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 34618: authorized by Steven Holland, entered by Steven Holland on 12.09.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

  - Cyclocystoididae
 Ichnofossils -
Diplocraterion sp. Torell 1870