Riviere aux Saumons, Becscie Fm, sample C168 (Silurian to of Canada)

Where: Quebec, Canada (49.4° N, 62.3° W: paleocoordinates 21.6° S, 35.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Becscie Formation, Rhuddanian to Rhuddanian (443.4 - 438.5 Ma)

• lower half of the Llandovery (Lower Silurian) succession of Rhuddanian-

•early Aeronian age

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal; mudstone

• Low in the Becscie Formation, 14 m above its base. The Becscie Formation is approximately 130 m thick. The base of the formation conformably overlies the Laframboise Member, Ellis Bay Formation that is a prominent thin unit characterized by small bioherms and crinoidal interbeds. The reefs mark a shallow-water phase of sedimentation with the overlying lower Becscie (Fox Point Member) marking an initial Llandovery deepening (flooding) phase with rhythmic, even, thin-bedded wackestone and characterized by increased lenticular intrarudstone. The Becscie Formation was interpreted as deposited on a low-energy, muddy, carbonate to argillaceous ramp subject to short-lived, episodic, highenergy storms.
• muddy, carbonate to argillaceous ramp

Size classes: mesofossils, microfossils

Primary reference: S. Zhang and C. R. Barnes. 2002. A New Llandovery (Early Silurian) Conodont Biozonation and Conodonts from the Becscie,Merrimack, and Gun River Formations, Anticosti Island, Québec. Memoir (The Paleontological Society) [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 142729: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 15.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Conodonta
 Ozarkodinida -
Ozarkodina hassi
Ozarkodina hassi Pollock et al. 1970 conodont
 Panderodontida - Panderodontidae
Panderodus unicostatus
Panderodus unicostatus Branson and Mehl 1933 conodont
  -
Rexroadus nathani
Rexroadus nathani McCracken and Barnes 1981 conodont