Beaver Dam Mountains BM1, Bed 10: Spathian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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12 individuals | |||||||||
| Right-hand Valves Counted, 2nd Collection ABS [originally entered as "Bivalvia sp."] | ||||||||||
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Bivalvia
- Pterioida
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Pterioida indet.
Newell 1965
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3 individuals | |||||||||
| Right-Hand Valves Counted. 2nd Collection ABS | ||||||||||
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Bivalvia
- Myalinida
- Myalinidae
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Promyalina sp.
Kittl 1903
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10 specimens | |||||||||
| Promyalina sp. A | ||||||||||
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Promyalina informal sp. a
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5 specimens | |||||||||
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= Promyalina putiatensis
Kiparisova 1938
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McGowan et al. 2009 | |||||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Bakevellia cf. costata
(Schlotheim 1820)
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5 specimens | |||||||||
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Bakevellia cf. exporrecta
(Lepsius 1878)
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15 specimens | |||||||||
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Bivalvia
- Pectinida
- Aviculopectinidae
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Eumorphotis sp.
Bittner 1901
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3 specimens | |||||||||
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= Eumorphotis multiformis
Bittner 1899
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McGowan et al. 2009 | |||||||||
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Gastropoda
- Naticopsidae
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Naticopsis depresispirus
Batten and Stokes 1986
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1 individual | |||||||||
| 2nd Collection ABS | ||||||||||
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Naticopsis utahensis
Batten and Stokes 1986
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1 individual | |||||||||
| 2nd Collection ABS | ||||||||||
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Gastropoda
- Colloniidae
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Chartronella unicostata
Batten and Stokes 1986
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1 individual | |||||||||
| 2nd Collection ABS | ||||||||||
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Gastropoda
- Coelostylinidae
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Coelostylina virginensis
Batten and Stokes 1986
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1 individual | |||||||||
| 2nd Collection ABS | ||||||||||
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Rhynchonellata
- Terebratulida
- Gusarellidae
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Protogusarella smithi
Perry and Chatterton 1979
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14 specimens | |||||||||
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Rhynchonellata
- Rhynchonellida
- Norellidae
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Piarorhynchella triassica
(Girty 1927)
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24 specimens | |||||||||
| 2nd Collection ABS | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Washington |
| Coordinates: | 37.1° North, 113.8° West (view map) | ||||
| Paleocoordinates: | 8.1° North, 39.5° West | ||||
| Basis of coordinate: | unpublished field data | ||||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.9 - 247.2 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | lithified calcareous siltstone |
| Includes fossils? | Y |
| Lithology description: Bedded hard porcellaneous limestone | |
| Environment: | carbonate indet. |
| Geology comments: Calcareous siltstone full of Permophorus and Promyalina forming shell pavement | |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 62971 | ||
| Authorizer: | A. McGowan | Enterer: | A. McGowan |
| Modifier: | M. Manojlovic | Research group: | marine invertebrate |
| Created: | 2006-08-02 04:22:51 | Last modified: | 2017-01-29 17:29:18 |
| Access level: | the public | Released: | 2006-08-02 04:22:51 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 18152. | A. J. McGowan, A. B. Smith, and P. D. Taylor. 2009. Faunal diversity, heterogeneity and body size in the Early Triassic: testing post-extinction paradigms in the Virgin Limestone of Utah, USA. Australian Journal of Earth Sciences 56:859-872 [A. McGowan/A. McGowan/M. Clapham] |