USNM9272, Block 1, Ko Muk Island northwest: 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 funaria
Grant 1976
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36 specimens | |||||||||
| (21 measurements) | ||||||||||
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Hustedia ratburiensis
Waterhouse and Piyasin 1970
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110 specimens | |||||||||
| (11 measurements) | ||||||||||
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Rhynchonellata
- Athyridida
- Athyrididae
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Cleiothyridina tribulosa
Grant 1976
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5 specimens | |||||||||
| (4 measurements) | ||||||||||
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Composita advena
Grant 1976
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25 specimens | |||||||||
| recombined as Posicomta advena | ||||||||||
| (12 measurements) | ||||||||||
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Rhynchonellata
- Spiriferinida
- Paraspiriferinidae
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Paraspiriferina gentilis
Grant 1976
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2 specimens | |||||||||
| (5 measurements) | ||||||||||
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Callispirina austrina
Grant 1976
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2 specimens | |||||||||
| (8 measurements) | ||||||||||
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Rhynchonellata
- Spiriferinida
- Spiriferellinidae
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Spiriferellina yanagidai
Grant 1976
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21 specimens | |||||||||
| (13 measurements) | ||||||||||
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Rhynchonellata
- Spiriferida
- Ambocoeliidae
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Cruricella couria
Grant 1976
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42 specimens | |||||||||
| (11 measurements) | ||||||||||
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Rhynchonellata
- Spiriferida
- Spiriferellidae
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Tipispirifer oppilatus
Grant 1976
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4 specimens | |||||||||
| (8 measurements) | ||||||||||
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Rhynchonellata
- Spiriferida
- Brachythyrididae
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Martiniidae indet.
Waagen 1883
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1 specimen | |||||||||
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= Pustuloplica cooperi
Waterhouse 1981
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Waterhouse 1981 | |||||||||
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Rhynchonellata
- Rhynchonellida
- Pontisiidae
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Pontisia exoria
Grant 1976
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1 specimen | |||||||||
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Rhynchonellata
- Terebratulida
- Notothyrididae
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Notothyris triplax
Grant 1976
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1 specimen | |||||||||
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Rhynchonellata
- Terebratulida
- Gillediidae
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Hemiptychina murrita
Grant 1976
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7 specimens | |||||||||
| (8 measurements) | ||||||||||
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Strophomenata
- Productida
- Rigbyellidae
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Paralyttonia tenax
Grant 1976
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56 specimens | |||||||||
| (19 measurements) | ||||||||||
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Strophomenata
- Productida
- Lyttoniidae
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? Leptodus sp.
Kayser 1883
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1 specimen | |||||||||
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? Adriana sp.
de Gregorio 1930
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1 specimen | |||||||||
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Strophomenata
- Productida
- Strophalosiidae
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Heteralosia haerens
Grant 1976
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115 specimens | |||||||||
| (11 measurements) | ||||||||||
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Strophomenata
- Productida
- Aulostegidae
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Urushtenia arguta
Grant 1976
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36 specimens | |||||||||
| (11 measurements) | ||||||||||
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Strophomenata
- Productida
- Cooperinidae
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Cooperina polytreta
Grant 1976
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26 specimens | |||||||||
| (10 measurements) | ||||||||||
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Ceocypea sp.
Grant 1972
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1 specimen | |||||||||
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Strophomenata
- Productida
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Incisius concisus
Grant 1976
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400 specimens | |||||||||
| synonym of Incisius incisus | ||||||||||
| (18 measurements) | ||||||||||
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Strophomenata
- Productida
- Paucispiniferidae
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Retimarginifera celeteria
Grant 1976
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18 specimens | |||||||||
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Strophomenata
- Productida
- Linoproductidae
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Linoproductus sp.
(Chao 1927)
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6 specimens | |||||||||
| (5 measurements) | ||||||||||
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Strophomenata
- Productida
- Productellidae
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Kozlowskia cornuta
Grant 1976
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7 specimens | |||||||||
| (4 measurements) | ||||||||||
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Bibatiola costata
Grant 1976
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29 specimens | |||||||||
| (16 measurements) | ||||||||||
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Dyschrestia spodia
Grant 1976
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4 specimens | |||||||||
| (6 measurements) | ||||||||||
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Stictozoster leptus
Grant 1976
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10 specimens | |||||||||
| (16 measurements) | ||||||||||
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Comuquia modesta
Grant 1976
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65 specimens | |||||||||
| (24 measurements) | ||||||||||
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Strophomenata
- Orthotetida
- Derbyiidae
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Derbyia scobina
Grant 1976
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2 specimens | |||||||||
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Strophomenata
- Orthotetida
- Schuchertellidae
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Streptorhynchus sulculatum
Grant 1976
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50 specimens | |||||||||
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Strophomenata
- Orthotetida
- Meekellidae
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Perigeyerella tricosa
Grant 1976
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60 specimens | |||||||||
| (33 measurements) | ||||||||||
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Strophomenata
- Strophomenida
- Anopliidae
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Tornquistia tropicalis
Grant 1976
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14 specimens | |||||||||
| recombined as Neotornquistia tropicalis | ||||||||||
| (11 measurements) | ||||||||||
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Chonetina sp.
Krotow 1888
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3 specimens | |||||||||
| (5 measurements) | ||||||||||
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= Costachonetina krotowi
Waterhouse 1981
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Waterhouse 1981 | |||||||||
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Strophomenata
- Strophomenida
- Rugosochonetidae
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Chonetinella cymatilis
Grant 1976
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7 specimens | |||||||||
| recombined as Neochonetes (Sommeriella) cymatilis | ||||||||||
| (12 measurements) | ||||||||||
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Rugaria molengraaffi
(Broili 1916)
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50 specimens | |||||||||
| (17 measurements) | ||||||||||
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Craniata
- Craniida
- Craniidae
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Nematocrania crassa
Grant 1976
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24 specimens | |||||||||
| (7 measurements) | ||||||||||
| 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: | 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 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. | |
Metadata
| Database number: | 40896 | ||
| Authorizer: | D. Bottjer, M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2004-07-02 13:39:24 | Last modified: | 2011-05-14 15:14:55 |
| Access level: | the public | Released: | 2004-07-02 13:39:24 |
| 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] |