USNM9271, Block 7, Ko Muk Island northeast: Roadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Rhynchonellata
- Athyridida
- Neoretziidae
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Hustedia ratburiensis
Waterhouse and Piyasin 1970
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20 specimens | ||||||
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Rhynchonellata
- Athyridida
- Athyrididae
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Cleiothyridina tribulosa
Grant 1976
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4 specimens | ||||||
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Composita advena
Grant 1976
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10 specimens | ||||||
| recombined as Posicomta advena | |||||||
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Rhynchonellata
- Terebratulida
- Dielasmatidae
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Dielasma sp.
King 1856
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1 specimen | ||||||
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Rhynchonellata
- Rhynchonellida
- Wellerellidae
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Uncinunellina sp.
Grabau 1932
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1 specimen | ||||||
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Strophomenata
- Productida
- Aulostegidae
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Urushtenia murina
Grant 1976
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2 specimens | ||||||
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Strophomenata
- Productida
- Productellidae
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Celebetes leptus
Grant 1976
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1 specimen | ||||||
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Strophomenata
- Productida
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Marginifera nesiotes
Grant 1976
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11 specimens | ||||||
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Strophomenata
- Productida
- Paucispiniferidae
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Caricula salebrosa
Grant 1976
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35 specimens | ||||||
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Strophomenata
- Orthotetida
- Meekellidae
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Meekella addicta
Grant 1976
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12 specimens | ||||||
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Strophomenata
- Orthotetida
- Schuchertellidae
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Streptorhynchus sulculatum
Grant 1976
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1 specimen | ||||||
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Schuchertella cooperi
Grant 1976
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15 specimens | ||||||
| see common names | |||||||
Geography
| Country: | Thailand | State/province: | Trang |
| Coordinates: | 7.4° North, 99.3° East (view map) | ||
| Paleocoordinates: | 31.3° South, 107.5° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
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 | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Blocks are derived from seacliffs, making it impossible to measure a stratigraphic section or determine whether they are derived from a single horizon. 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: | lithified argillaceous,sandy "limestone" |
| Includes fossils? | Y |
| Environment: | offshore shelf |
| Geology comments: Interpreted as rather quiet water that was deep enough not to be disrupted by ordinary wave action. It was a fairly flat sea floor bearing an abundant fauna of small organisms with bryozoans and crinoids in patches like gardens. | |
Taphonomy
| Modes of preservation: | body,replaced with silica |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection excludes: | some macrofossils |
| Collection methods: | bulk,surface (float),chemical,field collection |
| Reason for describing collection: | paleoecologic analysis |
| Taxonomic list comments:Concentrates on brachiopods, and other groups are listed only in the text for the generic total collection, not for the subset individual blocks. | |
Metadata
| Database number: | 40876 | ||
| Authorizer: | D. Bottjer | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-07-02 10:22:26 | Last modified: | 2011-05-14 14:51:00 |
| Access level: | the public | Released: | 2004-07-02 10:22:26 |
| 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] |