USNM 10116. Shore 2175’ ne of McGillivray Brook, 60’ nnw of overburden line. Ari (Silurian of Canada)

Also known as Arisaig

Where: Nova Scotia, Canada (45.6° N, 62.0° W: paleocoordinates 40.6° S, 33.5° 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 and lithified, bioturbated siltstone

• 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, YPM

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 49822: authorized by Pete Wagner, entered by Pete Wagner on 27.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• I've updated some of the generic taxonomy
Gastropoda
 Murchisoniina - Phanerotrematidae
Phanerotrema aff. jugosum Huxley and Etheridge 1865 snail
 Euomphalina - Platyceratidae
"Platyceras (Platyostoma) cornutum" = Platyostoma cornutum, Naticonema kauffmani
"Platyceras (Platyostoma) cornutum" = Platyostoma cornutum Hisinger 1837 snail
Naticonema kauffmani Peel 1975 snail
Strophomenata
 Orthotetida - Chilidiopsidae
? Fardenia sp. Lamont 1935
 Strophomenida - Rafinesquinidae
"Leptaena cf. martinensis" = Leptaena rugosa
"Leptaena cf. martinensis" = Leptaena rugosa Dalman 1828
 Strophomenida - Leptostrophiidae
Rhynchonellata
 Rhynchonellida - Camarotoechiidae
 Orthida - Dalmanellidae