Jupiter Road, Anticosti Island: Alexandrian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Praenopora superba
Cyclorinites gregarius
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Ancillotoechia fringilla (Billings 1862)
Rhynchonellata - Atrypida
Zygospiraella planoconvexa
Anthozoa - Heliolitida - Proporidae
Propora sp. Milne-Edwards and Haime 1849
Anthozoa - Heliolitida - Halysitidae
Catenipora sp. Lamarck 1816
Anthozoa - Favositida - Favositidae
Palaeofavosites sp. (Twenhofel 1914)
see common names

Geography
Country:Canada State/province:Québec
Coordinates: 49.5° North, 63.6° West (view map)
Paleocoordinates:21.1° South, 35.7° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Silurian Epoch: Llandovery
10 m.y. bin: Silurian 1
*Period:Early/Lower Silurian *Local age/stage:Alexandrian - Niagaran
Key time interval: Alexandrian
Age range of interval: 443.8 - 438.7 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Anticosti Formation:Becscie Member:Chabot
Stratigraphic resolution:member
Stratigraphy comments: PJW: Given as Member 4, which is now Chabot.
Lithology and environment
Primary lithology: argillaceous lime mudstone
Secondary lithology:green calcareous "shale"
Includes fossils?Y
Includes fossils?Y
Lithology description: Similar to Member 3 of Becscie ("rregularly, thin- to medium lenticular-bedded, argillaceous, silty to sandy siliciclastic lime carbonates of mainly highly skeletal, algal, locally reefal grainstones and packstones, interbedded with highly calcareous and fossiliferous green shale. The commonly current laminated, rudaceous limestones grade locally to siliciclastic sandstone."), with greater shale content, a distinct pistachio-green color and recessive nature.
Environment:carbonate indet.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: Collection also includes brachiopods and corals.
Metadata
Also known as:Anticosti Island, Jupiter Road, Becscie Formation Member 4
Database number:24407
Authorizer:S. Holland Enterer:T. Hanson
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-08-06 21:55:44 Last modified:2018-05-08 14:24:01
Access level:the public Released:2002-08-06 21:55:44
Creative Commons license:CC BY
Reference information

Primary reference:
6866. C. R. Barnes, A. A. Petryk, and T. E. Bolton. 1981. Anticosti Island, Québec. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:1-24 [S. Holland/T. Hanson/S. Bruning]