Beaver Dam Mountains BM5, Bed 11A: Spathian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Tentaculita
- Microconchida
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Microconchus sp.
Murchison 1839
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1 specimen | |||||||||
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= Microconchus utahensis
Zatoń et al. 2013
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Zatoń et al. 2013 | |||||||||
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Rhynchonellata
- Terebratulida
- Gusarellidae
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Protogusarella smithi
Perry and Chatterton 1979
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3 specimens | |||||||||
| 2nd Collection | ||||||||||
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Bivalvia
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Bivalvia indet.
Linnaeus 1758
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12 individuals | |||||||||
| 2nd Collection [originally entered as "Bivalvia sp."] | ||||||||||
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Bivalvia
- Pectinida
- Hunanopectinidae
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Leptochondria informal sp. a
Bittner 1891
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2 specimens | |||||||||
| 2nd Collection | ||||||||||
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Leptochondria cf. thaynesiana
(Girty 1927)
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1 specimen | |||||||||
| synonym of Leptochondria curtocardinalis | ||||||||||
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Bivalvia
- Pectinida
- Aviculopectinidae
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Eumorphotis ? multiformis
(Bittner 1899)
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2 specimens | |||||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Bakevellia cf. exporrecta
(Lepsius 1878)
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129 individuals | |||||||||
| 2nd Collection | ||||||||||
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Bivalvia
- Myalinida
- Myalinidae
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? Promyalina sp.
Kittl 1903
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1 individual | |||||||||
| Left Valves Counted, 2nd Collection | ||||||||||
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? Promyalina informal sp. a
Kittl 1903
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1 individual | |||||||||
| 2nd Collection | ||||||||||
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Bivalvia
- Pholadomyida
- Pholadomyidae
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Arcomya sp.
Agassiz 1838
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1 specimen | |||||||||
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Bivalvia
- Cardiida
- Anthracosiidae
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Unionites sp.
Wissman 1841
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2 individuals | |||||||||
| 2nd Collection | ||||||||||
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Bivalvia
- Carditida
- Myophoricardiidae
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Pseudocorbula sp.
Philippi 1898
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119 specimens | |||||||||
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Bivalvia
- Trigoniida
- Myophoriidae
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Neoschizodus laevigatus
(Ziethen 1830)
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Hautmann et al. 2013 | |||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Utah | County: | Washington |
| Coordinates: | 37.1° North, 113.7° West (view map) | ||||
| Paleocoordinates: | 8.0° North, 39.5° West | ||||
| Basis of coordinate: | unpublished field data | ||||
| Geographic resolution: | small collection |
Time
| Period: | Triassic | Epoch: | Early/Lower Triassic |
| Stage: | Olenekian | 10 m.y. bin: | Triassic 1 |
| Key time interval: | Spathian | ||
| Age range of interval: | 248.90000 - 247.20000 m.y. ago |
Stratigraphy
Lithology and environment
| Primary lithology: | red lithified "shale" |
| Secondary lithology: | red lithified "limestone" |
| Includes fossils? | Y |
| Lithology description: Poorly exposed red shale with thin dark red bivalve limestone level | |
| Environment: | carbonate indet. |
Taphonomy
| Modes of preservation: | body,mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 62983 | ||
| Authorizer: | A. McGowan, M. Clapham | Enterer: | A. McGowan, M. Clapham |
| Modifier: | M. Manojlovic | Research group: | marine invertebrate |
| Created: | 2006-08-02 04:45:28 | Last modified: | 2016-10-17 16:50:31 |
| Access level: | the public | Released: | 2006-08-02 04:45:28 |
| 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] |
Secondary references:
| 44069 | M. Hautmann, A. B. Smith, A. J. McGowan and H. Bucher. 2013. Bivalves from the Olenekian (Early Triassic) of south-western Utah: systematics and evolutionary significance. Journal of Systematic Palaeontology 11:263-293 [M. Clapham/M. Clapham/M. Clapham] | |
| 44346 | M. Zatoń, P. D. Taylor, and O. Vinn. 2013. Early Triassic (Spathian) post-extinction microconchids from western Pangea. Journal of Paleontology 87:159-165 [M. Clapham/M. Clapham/M. Clapham] |