USNM9266, Block 4, Khao Mang Lat Hill, Ban Kao: Roadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Athyridida
- Athyrididae
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Cleiothyridina seriata
Grant 1976
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2 specimens | |||||||||
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Strophomenata
- Productida
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Marginifera arenaria
Grant 1976
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250 specimens | |||||||||
| recombined as Marginifera (Arenaria) arenaria | ||||||||||
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Strophomenata
- Strophomenida
- Anopliidae
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Demonedys ? fastigiata
Grant 1976
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4 specimens | |||||||||
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Strophomenata
- Orthotetida
- Derbyiidae
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Derbyia sp.
Waagen 1884
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2 specimens | |||||||||
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Strophomenata
- Orthotetida
- Schuchertellidae
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Streptorhynchus khwaense n. sp.
Grant 1976
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400 specimens | |||||||||
| (23 measurements) | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Thailand | State/province: | Kanchanaburi |
| Coordinates: | 14.0° North, 99.4° East (view map) | ||
| Paleocoordinates: | 31.3° South, 99.8° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | small collection |
Time
| Period: | Permian | Epoch: | Guadalupian |
| Stage: | Roadian | 10 m.y. bin: | Permian 3 |
| Key time interval: | Roadian | ||
| Age range of interval: | 273.01000 - 266.90000 m.y. ago |
Stratigraphy
| Formation: | Rat Buri | ||||
| Stratigraphy comments: The age of the Rat Buri fauna is problematic. "Rat Buri" limestones likely range in age from Kungurian through Capitanian to perhaps Wuchiapingian. Wordian fusulinids appear most common in other collections, but are not found in association with the brachiopod localities. The brachopod fauna is most similar to the Wordian Amb Formation of the Salt Range, in Pakistan, tentatively indicating a Wordian age. |
Lithology and environment
| Primary lithology: | shelly/skeletal lithified silty,sandy "limestone" |
| Includes fossils? | Y |
| Lithology description: Sandy silty limestone, with the maximum size of the sand in the medium range. Sand makes up about 10% of the rock and silt about 15%; the cement is calcite. | |
| Environment: | shallow subtidal indet. |
| Geology comments: Depositional setting reconstructed as fairly shallow water, near shore and a source of terrigenous sediment, with a fairly firm substrate, in somewhat turbid water. | |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,chemical,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Concentrates on brachiopods, accompanying faunas are mentioned but likely not fully described | |
Metadata
| Database number: | 40858 | ||
| Authorizer: | D. Bottjer | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-07-01 15:22:09 | Last modified: | 2011-05-14 13:40:55 |
| Access level: | the public | Released: | 2004-07-01 15:22:09 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 11031. | R. E. Grant. 1976. Permian brachiopods from southern Thailand. Paleontological Society Memoir 9:1-269 [D. Bottjer/M. Clapham/M. Clapham] |