Beaver Dam Mountains BM1, Bed 9: Spathian, Utah
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
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Bivalvia informal indet. a
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1 specimen | |||||||||
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Bivalvia
- Trigoniida
- Trigonodidae
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Trigonodus cf. orientalis
Bittner 1899
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Hautmann et al. 2013 | |||||||||
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Trigonodus cf. sandbergeri
von Alberti 1864
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Hautmann et al. 2013 | |||||||||
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Bivalvia
- Cardiida
- Kalenteridae
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Pseudomyoconcha cf. gastrochaena
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1 specimen | |||||||||
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= Myoconcha cf. plana
Kiparisova 1938
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Hautmann et al. 2013 | |||||||||
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Permophorus triassicus
Newell and Boyd 1999
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4 specimens | |||||||||
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Bivalvia
- Pholadida
- Pleuromyidae
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Pleuromya prima n. sp.
Hautmann et al. 2013
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Hautmann et al. 2013 | |||||||||
| (1 measurement) | ||||||||||
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Bivalvia
- Myalinida
- Myalinidae
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Promyalina putiatinensis
(Kiparisova 1938)
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4 specimens | |||||||||
| (2 measurements) | ||||||||||
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Bivalvia
- Ostreida
- Bakevelliidae
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Bakevellia cf. costata
(Schlotheim 1820)
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3 specimens | |||||||||
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= Bakevellia costata
Schlotheim 1820
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Hautmann et al. 2013 | |||||||||
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Bakevellia cf. exporrecta
(Lepsius 1878)
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3 specimens | |||||||||
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Bivalvia
- Pectinida
- Hunanopectinidae
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Leptochondria informal sp. a
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1 specimen | |||||||||
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Leptochondria cf. thaynesiana
(Girty 1927)
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1 specimen | |||||||||
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Bivalvia
- Pectinida
- Aviculopectinidae
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Eumorphotis sp.
Bittner 1901
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2 specimens | |||||||||
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Eumorphotis multiformis
(Bittner 1899)
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7 specimens | |||||||||
| (1 measurement) | ||||||||||
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= Eumorphotis ericius n. sp.
Hautmann et al. 2013
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Hautmann et al. 2013 | |||||||||
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Rhynchonellata
- Terebratulida
- Gusarellidae
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Protogusarella smithi
Perry and Chatterton 1979
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17 specimens | |||||||||
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Rhynchonellata
- Rhynchonellida
- Norellidae
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? Piarorhynchella triassica
(Girty 1927)
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14 specimens | |||||||||
| 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: | yellow lithified siltstone |
| Includes fossils? | Y |
| Environment: | carbonate indet. |
| Geology comments: Yellowish siltstone with rich bivalve and brachiopod fauna esp. rhynchonellids some gastropods. | |
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: | 62970 | ||
| Authorizer: | A. McGowan, M. Clapham | Enterer: | A. McGowan, M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2006-08-02 04:21:32 | Last modified: | 2017-08-04 11:48:33 |
| Access level: | the public | Released: | 2006-08-02 04:21:32 |
| 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] |