Raymond A2. Canadian Pacific railroad cut, E. Main St., Aylmer (Ordovician of Canada)

Where: Quebec, Canada (45.4° N, 75.9° W: paleocoordinates 27.1° S, 57.5° W)

• outcrop-level geographic resolution

When: Cahabagnathus sweeti conodont zone, Hog’s Back Formation, Chazyan (468.1 - 460.9 Ma)

• Was Aylmer Formation, St. Martin Member.

• group of beds-level stratigraphic resolution

Environment/lithology: limestone and sandstone

Size class: macrofossils

Reposited in the GSC

Primary reference: P. E. Raymond. 1908. The Gastropoda of the Chazy Formation. Annals of the Carnegie Museum 4:168-225 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 155416: authorized by Pete Wagner, entered by Pete Wagner on 12.04.2014, edited by Björn Kröger

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Euomphalina - Helicotomidae
Helicotoma whiteavesiana n. sp. Raymond 1908 snail
 Euomphalina - Raphistomatidae
Raphistoma striatum Emmons 1842 snail
 Murchisoniina - Lophospiridae
Lophospira billingsi n. sp.1 Raymond 1905 snail
Tergomya
 Archinacellida - Archinacellidae