USNM9269, Block 1, Khao Chang Hill, Rat Buri: Roadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata
- Spiriferida
- Brachythyrididae
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Martiniidae indet.
Waagen 1883
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1 specimen | |||||||||
= Pustuloplica cooperi
Waterhouse 1981
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Waterhouse 1981 | |||||||||
Rhynchonellata
- Athyridida
- Diplospirellidae
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Uncinella siamestris
Grant 1976
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3 specimens | |||||||||
(4 measurements) | ||||||||||
Rhynchonellata
- Athyridida
- Athyrididae
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Cleiothyridina seriata
Grant 1976
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15 specimens | |||||||||
Composita subsolana
Grant 1976
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10 specimens | |||||||||
recombined as Posicomta subsolana | ||||||||||
(9 measurements) | ||||||||||
Rhynchonellata
- Orthida
- Schizophoriidae
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Orthotichia waterhousei
Grant 1976
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7 specimens | |||||||||
recombined as Kotlaia waterhousei | ||||||||||
(1 measurement) | ||||||||||
Rhynchonellata
- Terebratulida
- Gillediidae
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Hemiptychina mintrita
Grant 1976
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5 specimens | |||||||||
(4 measurements) | ||||||||||
Rhynchonellata
- Spiriferinida
- Spiriferellinidae
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Spiriferellina adunctata
(Waterhouse and Piyasin 1970)
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2 specimens | |||||||||
corrected as Spiriferellina aduncata | ||||||||||
Strophomenata
- Productida
- Monticuliferidae
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Haydenella buravasi n. sp.
Grant 1976
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3 specimens | |||||||||
(2 measurements) | ||||||||||
Strophomenata
- Productida
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Marginifera otaria
Grant 1976
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120 specimens | |||||||||
recombined as Marginifera (Otariella) otaria | ||||||||||
(18 measurements) | ||||||||||
Strophomenata
- Strophomenida
- Rugosochonetidae
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Chonetinella sp.
Ramsbottom 1952
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1 specimen | |||||||||
(4 measurements) | ||||||||||
= Chonetinella granti n. sp.
Waterhouse 1981
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Waterhouse 1981 | |||||||||
Strophomenata
- Orthotetida
- Meekellidae
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Meekella colpata
Grant 1976
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18 specimens | |||||||||
(5 measurements) | ||||||||||
see common names |
Geography
Country: | Thailand | State/province: | Ratchaburi |
Coordinates: | 13.4° North, 99.8° East (view map) | ||
Paleocoordinates: | 30.9° South, 100.5° 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 | ||||
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: Blocks sampled were either "in place" in the limestone mass; others were from float. But because the jungle terrain makes measurement of stratigraphic sections difficult, the stratigraphy is unknown. 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: | black argillaceous,carbonaceous "limestone" |
Includes fossils? | Y |
Lithology description: Black limestone that left a large residue of carbonaceous clay after acid leaching | |
Environment: | offshore shelf |
Geology comments: Calm water below wave base |
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),surface (in situ),chemical,field collection |
Reason for describing collection: | paleoecologic analysis |
Taxonomic list comments:Concentrated on brachiopods; other groups are briefly mentioned in text for the locality in general but not reported in detail for individual blocks. |
Metadata
Database number: | 40864 | ||
Authorizer: | D. Bottjer, M. Clapham | Enterer: | M. Clapham |
Modifier: | M. Clapham | Research group: | marine invertebrate |
Created: | 2004-07-02 08:50:29 | Last modified: | 2011-05-14 14:05:57 |
Access level: | the public | Released: | 2004-07-02 08:50:29 |
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] |