D-4: D(A) Paris Canyon/Bear Lake: Griesbachian, Idaho
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Lingulata
- Lingulida
- Lingulidae
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Lingula sp.
Bruguiére 1797
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7 specimens | |||||||||
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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1 specimen | |||||||||
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Bivalvia indet.
Linnaeus 1758
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2 specimens | |||||||||
| originally entered as "Bivalvia (genus 2)"; changed by JA 30.6.04 | ||||||||||
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Bivalvia indet.
Linnaeus 1758
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4 specimens | |||||||||
| originally entered as "Bivalvia (genus 3)"; changed by JA 30.6.04 | ||||||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Bakevellia sp.
King 1848
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2 specimens | |||||||||
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Bivalvia
- Pectinida
- Hunanopectinidae
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Leptochondria sp.
Bittner 1891
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1 specimen | |||||||||
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Bivalvia
- Myalinida
- Myalinidae
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Myalinella sp.
(Newell 1942)
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3 specimens | |||||||||
| original and current combination Myalina (Myalinella) | ||||||||||
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Promyalina sp.
Kittl 1903
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5 specimens | |||||||||
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Bivalvia
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Paullia sp.
Schubert and Bottjer 1995
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1 specimen | |||||||||
| nomen nudum belonging to Heteroconchia | ||||||||||
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Gastropoda
- Coelostylinidae
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Coelostylina sp.
Kittl 1894
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Idaho |
| Coordinates: | 42.0° North, 111.0° West (view map) | ||
| Paleocoordinates: | 12.4° North, 34.5° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early/Lower Triassic |
| 10 m.y. bin: | Triassic 1 | ||
| Key time interval: | Griesbachian | ||
| Age range of interval: | 251.90200 - 251.40000 m.y. ago |
Stratigraphy
| Formation: | Dinwoody | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: The Dinwoody ranges in thickness from just a few meters in the east to about 270m in the southwest. Previous studies suggesting stratigraphic subdivision of the Dinwoody based on lithologic or paleontologic criteria have been discredited. Dominance of a basinal conodont fauna suggests that a broad relatively quiet marine embayment prevailed throughout much of the Early Triassic. The Dinwoody consists of olive-gray shale and siltstone with linestone interbeds that increase in frequency and thickness up section. Interbedded limestones and minor amounts of dolomites are dominated by bioclastic wackestones and packstones. | |||||
Lithology and environment
| Primary lithology: | lithified packstone |
| Includes fossils? | Y |
| Lithology description: ow-relief shell banks or amalgamanted shell beds, subject to wave action. These massive bioclastic packstones are dominated by nested large bivalves and bivalves fragments, held in a micritic matrix without any preferenial orientation. | |
| Environment: | marine indet. |
Taphonomy
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 33253 | ||
| Authorizer: | D. Bottjer | Enterer: | N. Bonuso |
| Modifier: | N. Bonuso | Research group: | marine invertebrate |
| Created: | 2003-07-24 11:59:44 | Last modified: | 2003-07-24 19:07:42 |
| Access level: | the public | Released: | 2003-07-24 11:59:44 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 8833. | J. K. Schubert and D. J. Bottjer. 1995. Aftermath of the Permian-Triassic mass extinction event: Paleoecology of Lower Triassic carbonates in the western USA. Palaeogeography, Palaeoclimatology, Palaeoecology 116:1-39 [D. Bottjer/N. Bonuso/N. Bonuso] |