USNM 10823. French River, 1,000 feet upstream from bridge on Antigonish-New Glas (Silurian of Canada)

Where: Nova Scotia, Canada (45.5° N, 62.4° W: paleocoordinates 36.2° S, 29.8° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Monograptus distans graptolite zone, French River Formation, Sheinwoodian (433.4 - 430.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; hematitic, shelly/skeletal, argillaceous sandstone

• "The geographic and stratigraphic relations with other communties are consistent with a BA 3 assignment...Rough water environment indicated..."

•SEP environmenal call based on limited given information

• "Occurs in argillaceous, sand-size sediment. The shells are almost entirely disarticulated and occur as coquinas...Beds about 10 cm thick...Prominent crossbeds and ripples are absent." Watkins and Boucot (1975) (PBDB ref. 6975) add that the sediment is red and hematite-rich.

Size class: macrofossils

Reposited in the USNM

• Abundances stated in text.

Primary reference: C. W. Harper. 1973. Brachiopods of the Arisaig Group (Silurian - Lower Devonian) of Nova Scotia. Geological Survey of Canada Bulletin 215:1-163 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 184852: authorized by Pete Wagner, entered by Pete Wagner on 28.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Rafinesquinidae
"Leptaena cf. depressa" = Leptaena (Leptaena) depressa
"Leptaena cf. depressa" = Leptaena (Leptaena) depressa Sowerby 1824
Rhynchonellata
 Rhynchonellida - Leptocoeliidae
Eocoelia sulcata Prouty 1923
Coelospira sulcara Prouty 1923 p. 466, pl. 27, figs . 6-8.
 Orthida - Draboviidae
Salopina conservatrix McLearn 1924
Dalmanella conservatrix McLearn 1924, p. 52, pl. 2, figs. 24, 25, non 26.