English Head Section, 69-79 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 3 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: taxonomic analysis

PaleoDB collection 63625: 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
 Bellerophontida - Temnodiscidae
"Oxydiscus tenuis" = Alaskadiscus tenuis
"Oxydiscus tenuis" = Alaskadiscus tenuis Twenhofel 1928 snail
 Bellerophontida - Bellerophontidae
? Bellerophon fraternus
? Bellerophon fraternus Billings 1866 snail
 Bellerophontida - Sinuitidae
Sinuites cf. bilobatus
Sinuites cf. bilobatus de Sowerby and Murchison 1839 snail
 Bellerophontida - Pterothecidae
Pterotheca anticostiana
Pterotheca anticostiana Twenhofel 1928 snail
 Bellerophontida - Bucaniidae
Phragmolites pannosus
Phragmolites pannosus Billings 1866 snail
 Murchisoniina - Lophospiridae
"? Lophospira circe" = Paupospira circe, Lophospira modesta
"? Lophospira circe" = Paupospira circe Billings 1857 snail
Lophospira modesta Billings 1857 snail
 Murchisoniina - Trochonematidae
"Trochonema ? umbilicatum" = Trochonema umbilicata
"Trochonema ? umbilicatum" = Trochonema umbilicata Hall 1847 snail
 Murchisoniina - Hormotomidae
Hormotoma cf. gracilis
Hormotoma cf. gracilis Hall 1847 snail
 Murchisoniina - Eotomariidae
Liospira americana, Clathrospira subconica
Liospira americana Billings 1860 snail
Clathrospira subconica Hall 1847 snail
Rostroconchia
 Ribeirioida - Ischyriniidae
"Ischyrina winchelli" = Ischyrinia winchelli
"Ischyrina winchelli" = Ischyrinia winchelli Billings 1866
Tergomya
 Archinacellida - Archinacellidae
Archinacella estella
Archinacella estella Billings 1865
 Archinacellida - Metoptomatidae
? Metoptoma alceste
? Metoptoma alceste Billings 1865