USNM9271, Block 3, Ko Muk Island northeast: Roadian, Thailand

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Spiriferida - Elythidae
Anomaloria glomerosa Grant 1976
28 specimens
Rhynchonellata - Spiriferida - Brachythyrididae
Martiniidae indet. Waagen 1883
3 specimens
    = Pustuloplica cooperi Waterhouse 1981
Waterhouse 1981
Rhynchonellata - Spiriferida - Ambocoeliidae
Orbicoelia fraterculus Waterhouse and Piyasin 1970
7 specimens
Cruricella couria Grant 1976
6 specimens
Rhynchonellata - Spiriferida - Spiriferellidae
Tipispirifer oppilatus Grant 1976
39 specimens
Rhynchonellata - Athyridida - Neoretziidae
Hustedia ratburiensis Waterhouse and Piyasin 1970
10 specimens
Hustedia funaria Grant 1976
5 specimens
Rhynchonellata - Athyridida - Athyrididae
Cleiothyridina tribulosa Grant 1976
14 specimens
Composita advena Grant 1976
72 specimens
recombined as Posicomta advena
Rhynchonellata - Orthida - Rhipidomellidae
Rhipidomella cordialis Grant 1976
300 specimens
(15 measurements)
Rhynchonellata - Terebratulida - Dielasmatidae
Dielasma sp. King 1856
4 specimens
Rhynchonellata - Spiriferinida - Spiriferellinidae
Spiriferellina yanagidai Grant 1976
100 specimens
(24 measurements)
Rhynchonellata - Spiriferinida - Paraspiriferinidae
Paraspiriferina gentilis Grant 1976
5 specimens
Callispirina austrina Grant 1976
1 specimen
Rhynchonellata - Rhynchonellida - Pontisiidae
Pontisia exoria Grant 1976
7 specimens
Strophomenata - Productida - Aulostegidae
Urushtenia murina Grant 1976
66 specimens
Strophomenata - Productida - Rigbyellidae
Rigbyella crassa Grant 1976
22 specimens
Paralyttonia tenax Grant 1976
8 specimens
Strophomenata - Productida - Productellidae
Dyschrestia spodia Grant 1976
7 specimens
Strophomenata - Productida
Marginifera nesiotes Grant 1976
6 specimens
Strophomenata - Productida - Paucispiniferidae
Gratiosina insculpta Grant 1976
5 specimens
recombined as Transennatia insculpta
Strophomenata - Strophomenida - Anopliidae
Demonedys fastigiata Grant 1976
50 specimens
Strophomenata - Strophomenida - Rugosochonetidae
Chonetinella cymatilis Grant 1976
25 specimens
recombined as Neochonetes (Sommeriella) cymatilis
Strophomenata - Orthotetida - Derbyiidae
Derbyia scobina Grant 1976
1 specimen
Strophomenata - Orthotetida - Meekellidae
Meekella addicta Grant 1976
22 specimens
Strophomenata - Orthotetida - Schuchertellidae
Streptorhynchus sulculatum Grant 1976
325 specimens
(16 measurements)
Schuchertella cooperi Grant 1976
2 specimens
Craniata - Craniida - Craniidae
Nematocrania crassa Grant 1976
9 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: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,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:40869
Authorizer:D. Bottjer, M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2004-07-02 10:19:54 Last modified:2011-05-14 14:36:15
Access level:the public Released:2004-07-02 10:19:54
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]