USNM9272, Ko Muk Island northwest undivided: Roadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Crinoidea
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Crinoidea indet.
Miller 1821
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Blastoidea
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Blastoidea indet.
Say 1825
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Strophomenata
- Productida
- Paucispiniferidae
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Gratiosina insculpta
Grant 1976
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5 specimens | |||||||||
| recombined as Transennatia insculpta | ||||||||||
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Strophomenata
- Productida
- Productellidae
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Dyschrestia spodia
Grant 1976
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3 specimens | |||||||||
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Rhynchonellata
- Spiriferida
- Elythidae
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Anomaloria glomerosa
Grant 1976
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1 specimen | |||||||||
| (4 measurements) | ||||||||||
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Rhynchonellata
- Spiriferida
- Spiriferellidae
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Spiriferella sp.
(Tschernyschew 1902)
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1 specimen | |||||||||
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Rhynchonellata
- Rhynchonellida
- Stenoscismatidae
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Stenoscisma informal sp. A
Conrad 1839
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4 specimens | |||||||||
| (3 measurements) | ||||||||||
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Rhynchonellata
- Rhynchonellida
- Psilocamaridae
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Goleomixa acymata
Grant 1976
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3 specimens | |||||||||
| (2 measurements) | ||||||||||
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Rhynchonellata
- Terebratulida
- Notothyrididae
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? Gefonia sp.
Licharew 1936
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1 specimen | |||||||||
| (1 measurement) | ||||||||||
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Stenolaemata
- Cystoporata
- Fistuliporidae
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Fistuliporidae indet.
Ulrich 1882
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Abundant category | |||||||||
| Branching, bifoliate, and encrusting | ||||||||||
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Stenolaemata
- Cryptostomida
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Cryptostomida indet.
(Vine 1884)
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| original and current combination Cryptostomata | ||||||||||
| Bifoliate | ||||||||||
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Stenolaemata
- Cryptostomata
- Fenestellidae
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Fenestellidae indet.
King 1850
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Numerous category | |||||||||
| Coarse and fine mesh-sizes | ||||||||||
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Anthozoa
- Stauriida
- Plerophyllidae
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Ufimia sp.
Shtukenberg 1895
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Plerophyllum sp.
Hinde 1890
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Anthozoa
- Stauriida
- Lophophyllidae
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Lophophyllidium sp.
Grabau 1928
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Anthozoa
- Favositida
- Pseudofavositidae
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Pseudofavosites sp.
Gerth 1922
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Abundant category | |||||||||
| 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 "limestone" |
| Includes fossils? | Y |
| Lithology description: Ligher colour than Ko Muk NE, contains little to no sand and less mud. | |
| 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. Total includes 17 specimens that were collected separately from the 5 blocks and therefore does not exactly equal the sum of subset blocks. | |
Metadata
| Database number: | 40895 | ||
| Authorizer: | D. Bottjer, M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-07-02 13:38:58 | Last modified: | 2011-05-14 15:08:09 |
| Access level: | the public | Released: | 2004-07-02 13:38:58 |
| 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] |
Secondary references:
| 27444 | J. B. Waterhouse. 1981. Early Permian brachiopods from Ko Yao Noi and near Krabi, southern Thailand. The Permian Stratigraphy and Palaeontology of Southern Thailand. Geological Survey of Thailand Memoir 4(2):45-213 [M. Clapham/M. Clapham] |