White Head Fm, Perce, Quebec, Caradoc - Patzkowsky: Edenian - Maysvillian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Trilobita
- Trinucleida
- Dionididae
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Dionide sp.
Barrande 1847
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Trilobita
- Trinucleida
- Raphiophoridae
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Lonchodomas sp.
Angelin 1854
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Trilobita
- Trinucleida
- Trinucleidae
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Tretaspis sp.
M'Coy 1849
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Pterobranchia
- Graptoloidea
- Diplograptidae
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Orthograptus calcaratus
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| var. vulgatus | ||||||||||
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Orthograptus cf. calcaratus
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| var. acutus | ||||||||||
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Orthograptus cf. quadrimucronatus ssp. indet.
Lapworth 1873
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| see common names | ||||||||||
Geography
| Country: | Canada | State/province: | Quebec |
| Coordinates: | 48.5° North, 64.3° West (view map) | ||
| Paleocoordinates: | 26.0° South, 43.0° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late Ordovician |
| Stage: | Katian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Middle Ordovician - Late/Upper Ordovician | *Epoch: | Caradoc |
| Key time interval: | Edenian - Maysvillian | ||
| Age range of interval: | 451.1 - 449.8 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Garin | ||||
| Stratigraphy comments: PJW: Was White Head, but that has been redefined to be younger; given quadrimucronatus, Garin is appropriate. ("Caradoc" probably reflects the Edenian being considered Caradoc at one time.) |
Lithology and environment
| Primary lithology: | lithified "shale" |
| Secondary lithology: | lithified dolomite |
| Lithology description: Shale unit. Some dolomite is interbedded within the shales, and the shales form a minor part of a laminated limestone sequence. | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Paper focuses on trilobites only, but occassionally includes a few other taxa which are included here. | |
Metadata
| Database number: | 13128 | ||
| Authorizer: | M. Patzkowsky | Enterer: | A. Krug |
| Modifier: | P. Wagner | Research group: | marine invertebrate |
| Created: | 2002-01-22 10:22:13 | Last modified: | 2020-05-25 19:16:10 |
| Access level: | the public | Released: | 2002-01-22 10:22:13 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4376. | P. J. Lespérance. 1968. Ordovician and Silurian trilobite faunas of the White Head Formation, Percé Region, Québec. Journal of Paleontology 42(3):811-826 [M. Patzkowsky/A. Krug/J. Alroy] |