Three Bay Brook Section, 79-228 feet from base of formation (Ordovician of Canada)

Where: Quebec, Canada (49.9° N, 64.3° W: paleocoordinates 22.6° S, 38.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Zone 4 Member (English Head Formation), Richmondian (449.6 - 445.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: gray, argillaceous limestone and gray, blue shale

• Grey, argillaceous limestone interstratified with grey and blue shale and several beds of limestone conglomereate. Some beds have pillow structure.

Size class: macrofossils

Reposited in the GSC, YPM

Primary reference: W. H. Twenhofel. 1928. Geology of Anticosti Island. Geological Survey of Canada Memoir 154(2132):1-351 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 63660: authorized by Pete Wagner, entered by Pete Wagner on 17.08.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Only rostroconchs, tergomyans and gastropods: the rest need taxonomic data.
Show authors, comments, and common names
Gastropoda
 Euomphalina - Raphistomatidae
Rhaphistoma vaurealense
Rhaphistoma vaurealense Twenhofel 1928 snail
 Bellerophontida - Bucaniidae
Phragmolites pannosus
Phragmolites pannosus Billings 1866 snail
 Murchisoniina - Lophospiridae
Lophospira modesta
Lophospira modesta Billings 1857 snail
 Murchisoniina - Hormotomidae
Hormotoma cf. gracilis
Hormotoma cf. gracilis Hall 1847 snail
 Murchisoniina - Eotomariidae
Clathrospira subconica
Clathrospira subconica Hall 1847 snail
Palaeacmaea
  -
Palaeacmaea magnifica n. sp.
Palaeacmaea magnifica n. sp. Twenhofel 1928