Gaspé Peninsula, Flynn Road, White Head Formation Unit 4: Ashgill, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa
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Hercochitina crickmayi
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Conodonta
- Protopanderodontida
- Drepanoistodontidae
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Drepanoistodus suberectus
(Branson and Mehl 1933)
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5 %-individuals | |||||||||
? Paroistodus mutatus
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Disappears near top of unit | ||||||||||
Conodonta
- Ozarkodinida
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Gamachignathus ensifer
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8 %-individuals | |||||||||
Conodonta
- Prioniodontida
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Phragmodus undatus
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30 %-individuals | |||||||||
Conodonta
- Prioniodontida
- Balognathidae
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Amorphognathus ? ordovicicus
Bergström and Bergström 1996
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5 %-individuals | |||||||||
Conodonta
- Prioniodontida
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Oulodus rohneri
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10 %-individuals | |||||||||
Conodonta
- Panderodontida
- Panderodontidae
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Belodina dispansa
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"Belodina" dispansa | ||||||||||
Belodina profunda
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"Belodina" profunda | ||||||||||
Panderodus spp.
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30 %-individuals | |||||||||
Panderodus liratus
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Trilobita
- Phacopida
- Cheiruridae
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Remipyga sp.
Whittington 1954
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synonym of Ceraurinus | ||||||||||
Anthozoa
- Stauriida
- Streptelasmatidae
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Lobocorallium vaurealensis
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Anthozoa
- Favositida
- Favositidae
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Palaeofavosites capax
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original and current combination Paleofavosites | ||||||||||
see common names |
Geography
Country: | Canada | State/province: | Québec |
Coordinates: | 48.7° North, 65.8° West (view map) | ||
Paleocoordinates: | 23.6° South, 40.3° West | ||
Basis of coordinate: | estimated from map | ||
Geographic resolution: | outcrop |
Time
Period: | Ordovician | Epoch: | Late/Upper Ordovician |
10 m.y. bin: | Ordovician 5 | ||
*Period: | Late/Upper Ordovician | *Epoch: | Ashgillian |
*International age/stage: | Rawtheyan | *Local age/stage: | Richmondian |
Key time interval: | Ashgill | ||
Age range of interval: | 449.60000 - 443.80000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | White Head | Member: | 4 | ||
Stratigraphic resolution: | member | ||||
Stratigraphy comments: "Unit" 4 |
Lithology and environment
Primary lithology: | gray,green silty "limestone" |
Secondary lithology: | yellow "shale" |
Includes fossils? | Y |
Includes fossils? | Y |
Lithology description: "[G]reenish-brown to grey sublithographic to silty limestone, with some coarse bioclastic limestone, in beds to about 8 cm, with yellow-weathered shaly interbeds to 4 cm." Lithology from W. B. Skidmore and P. J. Lespérance. 1981. Gaspé Peninsula, Percé area. Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:31-40. Edited by P. J. Lespérance. | |
Environment: | deep subtidal indet. |
Taphonomy
Size of fossils: | macrofossils,microfossils |
Collection methods and comments
Collection methods: | chemical,field collection |
Collection size: | 650 individuals |
Reason for describing collection: | biostratigraphic analysis |
Metadata
Database number: | 24972 | ||
Authorizer: | S. Holland | Enterer: | T. Hanson |
Modifier: | J. Alroy | Research group: | marine invertebrate |
Created: | 2002-08-23 16:31:49 | Last modified: | 2005-02-15 19:59:09 |
Access level: | the public | Released: | 2002-08-23 16:31:49 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
6965. | G. S. Nowlan. 1981. Late Ordovician - Early Silurian conodont biostratigraphy of the Gaspé Peninsula - a preliminary report. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 2:257-291 [S. Holland/T. Hanson/S. Bruning] |