USNM 10819. Wallace Brook. (Silurian of Canada)

Where: Nova Scotia, Canada (45.6° N, 62.7° W: paleocoordinates 40.5° S, 34.1° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Coronograptus cyphus graptolite zone, Beechhill Cove Formation, Rhuddanian (443.4 - 440.8 Ma)

• Additional information in Boucot et al. 1974. Geol. Soc. Amer. Spec. Paper 119

Environment/lithology: offshore; lithified, bioturbated, silty mudstone

• Formations not detailed here
• Mottled silty mudstones, intense bioturbation, rarely preserved thin silty laminae. Lenticular bedding of fine sandstones and coarse siltstones, some are scoured

Size class: macrofossils

Preservation: original calcite

Reposited in the USNM

Collection methods: bulk, mechanical, peel or thin section,

Primary reference: J. S. Peel. 1977. Systematics and palaeontology of the Silurian gastropods of the Arisaig Group. Det Kongelige Danske Videnskabernes Selskab Biologiske Skrifter 21(1):1-89 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 3835: authorized by Pete Wagner, entered by Pete Wagner on 10.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• I've updated some of the generic taxonomy
Gastropoda
 Murchisoniina - Lophospiridae
Loxoplocus (Lophospira) sedgwicki Donald 1906 snail
confirmed by PJW.
Arjamannia woodlandi Longstaff 1924 snail
Strophomenata
 Strophomenida - Rafinesquinidae
"Leptaena cf. martinensis" = Leptaena rugosa
"Leptaena cf. martinensis" = Leptaena rugosa Dalman 1828
 Strophomenida - Leptostrophiidae
Leptostrophia beechhillensis McLearn 1924
Rafinesquina beechhillensis McLearn 1924, p. 60, pl. 4, fig. 15.