Wilson Loc 156. Stewart Quarry, 1 mile south of Rockland (Ordovician of Canada)

Where: Ontario, Canada (45.5° N, 75.3° W: paleocoordinates 25.5° S, 51.9° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Phragmodus undatus conodont zone, Watertown Formation, Turinian (460.9 - 449.5 Ma)

• PJW: Given as Leray in Wilson (1951). Later changed to Chaumont. Following Oruche, Dix & Kamo (2018), it is now Watertown.

• formation-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

• carbonate platform

Size class: macrofossils

Preservation: replaced with silica

Reposited in the GSC

Collection methods: bulk,

Primary reference: A. E. Wilson. 1951. Gastropoda and Conularida of the Ottawa Formation of the Ottawa - St. Lawrence Lowland. Geological Survey of Canada Bulletin 17:1-149 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184671: authorized by Pete Wagner, entered by Pete Wagner on 16.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Orthida - Glyptorthidae
Eridorthis rocklandensis n. sp.3 Wilson 1946
 Trochonematoidea - Trochonematidae
Trochonema umbilicata Hall 1847 snail
? Trochonemella montrealensis Okulitch 1935 snail
 Trochonematoidea - Lophospiridae
Lophospira milleri Miller 1877 snail
Lophospira perangulata Hall 1847 snail
Eunema centralis2 Ulrich and Scofield 1897 snail
Part of lot id'ed as L. milleri
 Bellerophontida - Bucaniidae
Phragmolites compressus Conrad 1838 snail
Bucania halli Ulrich and Scofield 1897 snail
Salpingostoma billingsi Wilson 1951 snail
 Murchisoniina - Eotomariidae
Liospira vitruvia Billings 1865 snail
 Murchisoniina - Murchisoniidae
"Hormotoma salteri" = Cyrtostropha salteri
"Hormotoma salteri" = Cyrtostropha salteri Ulrich and Scofield 1897 snail
Hormotoma salteri canadensis
 Murchisoniina - Hormotomidae
Hormotoma gracilis Hall 1847 snail
Lichenocrinus crateriformis1 Hall 1872 Sea lily