USNM9271, Ko Muk Island northeast undivided: Roadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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Small horn coral that lacks any expression of septa within the calice | ||||||||||
Anthozoa
- Stauriida
- Lophophyllidae
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Lophophyllidium sp.
Grabau 1928
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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
- Favositida
- Pseudofavositidae
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Pseudofavosites sp.
Gerth 1922
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Gastropoda
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Pleurotomariacea indet.
Swainson 1840
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Abundant category | |||||||||
corrected as Pleurotomarioidea | ||||||||||
5 or 6 genera | ||||||||||
Gastropoda
- Euomphalina
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Euomphaloidea indet.
(White 1877)
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Abundant category | |||||||||
At least one | ||||||||||
Bivalvia
- Pectinida
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Pectinoidea indet.
Rafinesque 1815
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Abundant category | |||||||||
Strophomenata
- Strophomenida
- Rugosochonetidae
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Chonetinella cymatilis
Grant 1976
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13 specimens | |||||||||
Strophomenata
- Productida
- Cooperinidae
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Ceocypea sp.
Grant 1972
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6 specimens | |||||||||
Strophomenata
- Productida
- Cyclacanthariidae
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Acritosia sp.
Cooper and Grant 1969
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2 specimens | |||||||||
Strophomenata
- Productida
- Rigbyellidae
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Rigbyella crassa
Grant 1976
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5 specimens | |||||||||
Strophomenata
- Productida
- Lyttoniidae
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? Pseudoleptodus sp.
Stehli 1956
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1 specimen | |||||||||
? Eolyttonia sp.
Frederiks 1924
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2 specimens | |||||||||
Rhynchonellata
- Rhynchonellida
- Psilocamaridae
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Goleomixa acymata
Grant 1976
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3 specimens | |||||||||
(5 measurements) | ||||||||||
Rhynchonellata
- Rhynchonellida
- Wellerellidae
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Uncinunellina sp.
Grabau 1932
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1 specimen | |||||||||
(2 measurements) | ||||||||||
Rhynchonellata
- Spiriferinida
- Paraspiriferinidae
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Paraspiriferina gentilis
Grant 1976
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8 specimens | |||||||||
(5 measurements) | ||||||||||
Callispirina austrina
Grant 1976
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4 specimens | |||||||||
(17 measurements) | ||||||||||
Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Cruricella couria
Grant 1976
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5 specimens | |||||||||
(16 measurements) | ||||||||||
Rhynchonellata
- Spiriferida
- Spiriferellidae
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Tipispirifer oppilatus
Grant 1976
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3 specimens | |||||||||
(27 measurements) | ||||||||||
Rhynchonellata
- Athyridida
- Neoretziidae
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Hustedia funaria
Grant 1976
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1 specimen | |||||||||
(5 measurements) | ||||||||||
Hustedia ratburiensis
Waterhouse and Piyasin 1970
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30 specimens | |||||||||
(31 measurements) | ||||||||||
Rhynchonellata
- Athyridida
- Athyrididae
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Composita advena
Grant 1976
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2 specimens | |||||||||
recombined as Posicomta advena | ||||||||||
(40 measurements) | ||||||||||
Cleiothyridina tribulosa
Grant 1976
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1 specimen | |||||||||
(1 measurement) | ||||||||||
Rhynchonellata
- Athyridida
- Diplospirellidae
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Uncinella sp.
Waagen 1883
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2 specimens | |||||||||
Rhynchonellata
- Terebratulida
- Dielasmatidae
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Dielasma sp.
King 1856
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2 specimens | |||||||||
(5 measurements) | ||||||||||
Rhynchonellata
- Terebratulida
- Notothyrididae
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? Notothyris sp.
Waagen 1882
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8 specimens | |||||||||
(4 measurements) | ||||||||||
Stenolaemata
- Cystoporata
- Fistuliporidae
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Fistuliporidae indet.
Ulrich 1882
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Large branching, bifoliate, and encrusting | ||||||||||
Stenolaemata
- Cryptostomata
- Fenestellidae
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Fenestellidae indet.
King 1850
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Abundant category | |||||||||
Coarse and fine mesh varieties | ||||||||||
Stenolaemata
- Cryptostomida
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Cryptostomida indet.
(Vine 1884)
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original and current combination Cryptostomata | ||||||||||
Bifoliate | ||||||||||
Ostracoda
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Ostracoda indet.
Latreille 1802
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1 specimen | |||||||||
Crinoidea
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Crinoidea indet.
Miller 1821
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Abundant ossicles | ||||||||||
Crinoidea
- Dendrocrinida
- Graphiocrinidae
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Graphiocrinus sp.
de Koninck and Le Hon 1854
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Calyx | ||||||||||
= Contocrinus andamanensis n. sp.
Webster and Jell 1993
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Webster and Jell 1993 | |||||||||
Only graphiocrinid in Webster & Jell | ||||||||||
Crinoidea
- Dendrocrinida
- Apographiocrinidae
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Apographiocrinus komukensis n. sp.
Webster and Jell 1993
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Webster and Jell 1993 | |||||||||
Crinoidea
- Poteriocrinina
- Clathrocrinidae
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Clathrocrinidae indet.
Strimple and Moore 1971
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Webster and Jell 1993 | |||||||||
Blastoidea
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Blastoidea indet.
Say 1825
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"Some" 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: | 272.30000 - 268.80000 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: | 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. Total includes 96 specimens that were collected separately from the 10 blocks and therefore does not exactly equal the sum of subset blocks. |
Metadata
Database number: | 40870 | ||
Authorizer: | D. Bottjer, M. Clapham | Enterer: | M. Clapham |
Modifier: | M. Clapham | Research group: | marine invertebrate |
Created: | 2004-07-02 10:21:17 | Last modified: | 2011-05-14 14:24:31 |
Access level: | the public | Released: | 2004-07-02 10:21:17 |
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:
23014 | G. D. Webster and P.A. Jell. 1993. Early Permian inadunate crinoids from Thailand. Memoirs of the Queensland Museum 33(1):349-359 [G. Webster/G. Webster] |