C718: Richmondian, Canada
collected by P. Copper

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Orthotetida - Chilidiopsidae
Coolinia gamachiana (Twenhofel 1928)
Strophomenata - Strophomenida - Sowerbyellidae
Eochonetes glabra (Shaler 1865)
210 specimens
Thaerodonta glabra (Shaler 1865)
recombined as Eochonetes glabra
Sowerbyella glabra (Shaler 1865)
recombined as Eochonetes glabra
Strophomenata - Strophomenida
Archeochonetes muirwoodae Racheboeuf and Copper 1986
Strophomenata - Billingsellida - Clitambonitidae
Vellamo diversa (Shaler 1865)
Rhynchonellata - Orthida - Plaesiomyidae
Plaesiomys anticostiensis (Shaler 1865)
recombined as Dinorthis anticostiensis
Rhynchonellata - Orthida - Hesperorthidae
Barbarorthis laurentina (Billings 1857)
recombined as Hesperorthis laurentina
Rhynchonellata - Orthida - Platystrophiidae
Vinlandostrophia regularis (Shaler 1865)
Rhynchonellata - Orthida - Rhipidomellidae
Mendacella uberis (Billings 1866)
Rhynchonellata - Orthida - Dalmanellidae
Onniella tricapitata Jin and Zhan 2008
Rhynchonellata - Atrypida - Atrypinidae
Eospirigerina sp. Schuchert and Cooper 1930
Rhynchonellata - Athyridida - Meristellidae
Hindella umbonata (Billings 1862)
see common names

Geography
Country:Canada State/province:Quebec
Coordinates: 49.8° North, 64.4° West (view map)
Paleocoordinates:22.7° South, 39.0° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 5
Key time interval:Richmondian Graptolite zone: Paraorthograptus pacificus
Age range of interval:449.50000 - 443.70000 m.y. ago
Stratigraphy
Formation:Vaureal Member:Velleda
Stratigraphic resolution:bed
Stratigraphy comments: Collection C718 of Dewing 1999. Same collection names are used by Jin 1989, Jin and Zhan 2008, and Li and Copper 2006. Hercochitina crickmayi zone.
Lithology and environment
Primary lithology:burrows lithified argillaceous,silty "shale"
Secondary lithology:wave ripples,planar lamination,bioturbation lithified argillaceous,calcareous lime mudstone
Lithology description: Member description taken from 2007 Long. Tempestite frequency curves: a key to Late Ordovician and Early Silurian subsidence, sea-level change, and orbital forcing in the Anticosti foreland basin, Quebec, Canada. Can. J. Earth Sci. Vol. 44, 413-431. "The Velleda Member in its type section along the north-east coast consists of about 10 m of laminated siltstone and claystone, laminated to thin-bedded, fine and very fine sand-stone, with minor coarse sandstone and nodular micrite. In the western sections, the member is 15 m thick and is dominated by interbedded massive to laminated and thin-bedded micrites, calcareous mudstones, and grainstones. Individual micrite beds are typically 3 to 15 cm thick and have a sharp, planar base overlain by a thin layer of broken fossils. This basal lag is overlain by massive to weakly laminated micrite(floatstone), which appears to be partially bioturbated. Chondrites burrows are common, commonly forming 2% to 5% of the rock. The upper surfaces of the micrites, and parts of the overlying calcareous mudstones, are pitted and burrowed. The lateral continuity of individual beds is high (tens of metres) although some thinning and thickening are evident along strike. Larger scale architectural elements, including channels and symmetrical, draped waveforms are apparent in the cliff face and in tidal-flat exposures."
Environment:carbonate indet. Tectonic setting:foreland basin
Taphonomy
Modes of preservation:body,original calcite
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Collectors:P. Copper
Taxonomic list comments:Brachiopods only.
Metadata
Also known as:A74
Database number:158507
Authorizer:S. Finnegan Enterer:S. Finnegan
Modifier:P. Wagner
Created:2014-07-21 16:34:11 Last modified:2018-03-13 12:50:46
Access level:the public Released:2014-07-21 16:34:11
Creative Commons license:CC BY
Reference information

Primary reference:

51869. K. Dewing. 1999. Late Ordovician and Early Silurian strophomenid brachiopods of Anticosti Island, Quebec, Canada. In A. D. McCracken (ed.), Palaeontographica Canadiana 17:1-143 [S. Finnegan/S. Finnegan]

Secondary references:

65007 P. Copper, J. Jin, and A. Desrochers. 2013. The Ordovician-Silurian boundary (late Katian-Hirnantian) of western Anticosti Island: revised stratigraphy and benthic megafaunal correlations. Stratigraphy 10(4):213-227 [P. Wagner/P. Wagner]