Lea Park Fm: Early/Lower Campanian, Canada
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia
- Nuculanida
- Yoldiidae
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Yoldia evansi
(Meek and Hayden 1857)
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Bivalvia
- Mytilida
- Mytilidae
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Modiola meeki
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corrected as Modiolus | |||||||
Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus sp.
Sowerby 1814
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Bivalvia
- Poromyida
- Poromyidae
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Liopistha undata
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Hume 1925 | ||||||
Bivalvia
- Pholadomyida
- Pholadomyidae
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Pholadomya subventricosa
Meek and Hayden 1858
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Bivalvia
- Cardiida
- Cardiidae
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Protocardia borealis
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Hume 1925 | ||||||
Bivalvia
- Pholadida
- Corbulidae
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? Corbula sp.
Bruguière 1789
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Hume 1925 | ||||||
Bivalvia
- Lucinida
- Lucinidae
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Lucina occidentalis
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Lucina sp.
Bruguière 1797
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Gastropoda
- Aporrhaidae
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Anchura americana
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Gastropoda
- Naticidae
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Lunatia obliquata
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites ovatus
(Say 1820)
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Baculites compressus
Say 1920
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Baculites aquilaensis
Reeside 1927
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Cephalopoda
- Ammonitida
- Scaphitidae
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Acanthoscaphites sp.
Nowak 1911
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Cephalopoda
- Nautilida
- Nautilidae
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Eutrephoceras sp.
Hyatt 1894
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see common names |
Geography
Country: | Canada | State/province: | Alberta |
Coordinates: | 52.8° North, 110.9° West (view map) | ||
Paleocoordinates: | 59.9° North, 73.9° West | ||
Basis of coordinate: | based on nearby landmark | ||
Geographic resolution: | basin |
Time
Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
Key time interval: | Early/Lower Campanian | ||
Age range of interval: | 83.50000 - 70.60000 m.y. ago |
Stratigraphy
Formation: | Lea Park | ||||
Stratigraphic resolution: | formation | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: The top of the unit is defined by an interfingering contact with the Judith River Formation. The bottom is the contact with the upper or First White Speckled Shale. In eastern Saskatchewan and southern Manitoba the Lea Park correlates with the Gammon Ferruginous, Pembina and lower Millwood members of the Pierre Shale. To the north the Labiche Formation of the Athabasca River region is partly equivalent. In the Peace River area the Puskwaskau Formation is of similar age to the lower Lea Park. In the north and central Alberta Foothills the Nomad, Chungo and Hanson members of the Wapiabi Formation are considered equivalent. In southern Alberta the Belly River, Pakowki and Milk River formations and in northern Montana their stratigraphic equivalents the Judith River, Claggett and Eagle formations are of similar age to the Lea Park. AGE: Campanian, on the basis of ammonoid biostratigraphy; Scaphites ventricosus zone. STRATIGRAPHIC POSITION: List representing lower part of formation. |
Lithology and environment
Primary lithology: | gray poorly lithified silty "shale" |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Typically composed of medium to dark grey shale with minor amounts of silt. LITHIFICATION: Poorly lithified. | |
Environment: | marine indet. |
Geology comments: ENVIRONMENT: Siliciclastic marine. |
Taphonomy
Modes of preservation: | body,cast,mold/impression |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | surface (in situ),field collection |
Reason for describing collection: | taxonomic analysis |
Museum repositories: | GSC |
Collection method comments: COLLECTOR: Multiple collectors. REPOSITORY: Geological Survey of Canada (GSC). | |
Taxonomic list comments:COVERAGE: Exhaustive for marine invertebrates. NOMENCLATURE: Not an authoritative publication, and with relatively antiquated nomenclature but species-resolution identifications. |
Metadata
Database number: | 87439 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2009-03-17 14:54:32 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2009-03-17 14:54:32 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
29446. | P. S. Warren. 1935. The fauna of the Lea Park Shale. Transactions of the Royal Canadian Institute 20(11):223-229 [A. Hendy/A. Hendy] |
Secondary references:
29449 | G. S. Hume. 1925. Oil prospects in the vicinty of Battle River at the Alberta-Saskatchewan boundary. Geological Survey of Canada Summary Report [A. Hendy/A. Hendy/P. Wagner] |