White Head Fm, Perce, Hirnantian, 80F4 - Patzkowsky: Hirnantian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Strophomenata
- Strophomenida
- Leptostrophiidae
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? Eostropheodonta siluriana
(Davidson 1871)
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| synonym of Eostropheodonta hirnantensis | |||||||
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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? Plectothyrella crassicosta
(Dalman 1828)
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Rhynchonellata
- Orthida
- Draboviidae
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Kinnella kielanae
(Temple 1965)
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| synonym of Kinnella medlicotti | |||||||
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Hirnantia sagittifera
(McCoy 1851)
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Rhynchonellata
- Orthida
- Dalmanellidae
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? Dalmanella testudinaria
(Dalman 1828)
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| original and current combination Orthis testudinaria | |||||||
| see common names | |||||||
Geography
| Country: | Canada | State/province: | Quebec |
| Coordinates: | 48.5° North, 64.2° West (view map) | ||
| Paleocoordinates: | 23.1° South, 38.0° West | ||
| Basis of coordinate: | based on political unit | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| Stage: | Hirnantian | 10 m.y. bin: | Ordovician 5 |
| *Period: | Late/Upper Ordovician | *Epoch: | Hirnantian |
| Key time interval: | Hirnantian | ||
| Age range of interval: | 445.20000 - 443.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | White Head | Member: | unit 5 | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The White Head Formation is divided into 9 numbered units. This collection is from unit 5, with unit 1 being the base of the formation. | |||||
Lithology and environment
| Primary lithology: | lithified calcareous mudstone |
| Secondary lithology: | lithified silty,calcareous "shale" |
| Lithology description: Massive, slightly to moderately calcareous mudstone. A few meters at the base consist of calcareous silty shale with interbeds of silty limestone. At the top is a persistent horizon, couple of meters thick, of well sorted, fine to medium grained calcareous sandstone. | |
| Environment: | deep subtidal indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Brachiopods only. | |
Metadata
| Database number: | 12145 | ||
| Authorizer: | M. Patzkowsky | Enterer: | A. Krug |
| Modifier: | A. Krug | Research group: | marine invertebrate |
| Created: | 2001-10-10 12:11:42 | Last modified: | 2004-06-03 14:52:23 |
| Access level: | the public | Released: | 2001-10-10 12:11:42 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4171. | P. M. Sheehan and P.J. Lesperance. 1981. Brachiopods from the White Head Formation (Late Ordovician-Early Silurian) of the Perce region, Quebec, Canada. IUGS Subcommission on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group, Field meeting, Anticosti-Gaspe, Quebec, 1981 2:1-321 [M. Patzkowsky/A. Krug/A. Krug] |