Highway 108, stop 10-2-7 (2000), near Khun Yuam: Chadian, Thailand
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa
- Entactinaria
- Pylentonemidae
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Pylentonema antiqua
Deflandre 1963
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C category | ||||||
Protozoa
- Entactinaria
- Tetrentactiniidae
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Triaenosphaera sicarius
Deflandre 1973
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C category | ||||||
Protozoa
- Entactinaria
- Entactiniidae
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Astroentactinia multispinoasa
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C category | ||||||
synonym of Stigmosphaerostylus | |||||||
Entactinia vulgaris
Won 1983
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C category | ||||||
Entactinia cf. tortispina
(Ormiston and Lane 1976)
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R category | ||||||
Protozoa
- Nassellaria
- Archocyrtiidae
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Archocyrtium lagabriellei
Gourmelon 1987
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R category | ||||||
Archocyrtium diductum
Deflandre 1973
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R category | ||||||
Protozoa
- Albaillellaria
- Albaillellidae
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Albaillella indensis
Won 1983
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C category | ||||||
see common names |
Geography
Country: | Thailand |
Coordinates: | 19.0° North, 98.0° East (view map) |
Paleocoordinates: | 22.8° South, 112.5° East |
Basis of coordinate: | stated in text |
Geographic resolution: | outcrop |
Time
Period: | Carboniferous | Epoch: | Middle Mississippian |
Stage: | Visean | 10 m.y. bin: | Carboniferous 2 |
Key time interval: | Chadian | ||
Age range of interval: | 345.30000 - 345.00000 m.y. ago |
Stratigraphy
Stratigraphic resolution: | group of beds | ||||
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From unnamed lithostratigraphic unit, which is part of a Silurian-Carboniferous succession. AGE: middle Early Carboniferous, on the basis of radiolarian biostratigraphy; latest Tournasian-earliest Visean = Chadian; here placed in Chadian to avoid stratigraphic orphaning. STRATIGRAPHIC POSITION: From stop 10-2-7, near top of section. |
Lithology and environment
Primary lithology: | lithified cherty/siliceous "shale" |
Includes fossils? | Y |
Lithology description: SPECIFIC LITHOLOGY: Cherty shale. LITHIFICATION: Lithified, on the basis of facies description and sample preparation techniques. | |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection methods: | bulk,chemical,hydroflouric,sieve,field collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: COLLECTORS: Not stated, but presumably by some of the authors. REPOSITORY: Palaeontology Laboratory, Faculty of Earth Sciences, China University of Geosciences, Wuhan, People’s Republic China. PREPARATION METHODS: Samples were divided into two parts: one part was retained as an accessory sample and the other part processed. The sample was fragmented and placed in 5 per cent HF for 24 hours. The solution was repeatedly decanted and refilled using water until neutral, and then sieved at 300 mm. The remaining residue was dried and scanned using a stereoscopic microscope. Fossil radiolarians were recovered from each of the 11 samples, but were well preserved in only four. | |
Taxonomic list comments:COVERAGE: Exhaustive for radiolarians. NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. |
Metadata
Database number: | 90899 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | micropaleontology |
Created: | 2009-08-24 12:10:36 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2009-08-24 12:10:36 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
30578. | Q. Feng, D. Helmcke, C. Chonglakmani, R. Ingavat-Helmcke, and B. Liu. 2004. Early Carboniferous radiolarians from north-west Thailand: paleogeographical implications. Palaeontology 47(2):377-393 [A. Hendy/A. Hendy] |