Arisaig 11-50 (Silurian of Canada)

Where: Nova Scotia, Canada (45.6° N, 62.0° W: paleocoordinates 38.1° S, 32.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Ross Point Formation, Llandovery (443.4 - 433.4 Ma)

• Member: "uppermost middle and lower-half of upper"

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, bioturbated, argillaceous siltstone

• Heavily bioturbated shales and siltstone, siltstone predominating. Mixed with layers and lenses of laminated or wave-cross laminated siltstone. Water depth < 90 m.

Collection methods: surface (in situ), mechanical,

Primary reference: J. M. Hurst and R. K. Pickerill. 1986. The relationship between sedimentary facies and faunal associations in the Llandovery siliclastic Ross Brook Formation, Arisaig, Nova Scotia. Canadian Journal of Earth Science 23:705-726 [J. Alroy/M. Sommers/A. Clement]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3170: authorized by John Alroy, entered by Mike Sommers on 27.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• Ichnofossils: Chondrites, Planolites, Palaeophycus, Helminthopsis. Faunal count: 123.
Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Trilobita
 Phacopida - Dalmanitidae
Dalmanites sp.
Dalmanites sp. Barrande 1852 trilobite
Lophophorata
 Tentaculitida - Tentaculitidae
Tentaculites canadensis
Rhynchonellata
 Rhynchonellida - Leptocoeliidae
Eocoelia sulcata
Eocoelia sulcata Prouty 1923
 Rhynchonellida - Camarotoechiidae
Camarotoechia rossonia
 Orthida - Draboviidae
Salopina conservatrix
Salopina conservatrix McLearn 1924
Strophomenata
 Strophomenida - Strophochonetidae
Protochonetes tenuistriatus
Lingulata
 Lingulida - Lingulidae
Lingula sp.
Lingula sp. Bruguiére 1797
"spp."