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
Pylentonema antiqua Deflandre 1963
C category
Protozoa - Entactinaria - Tetrentactiniidae
Triaenosphaera sicarius Deflandre 1973
C category
Protozoa - Entactinaria - Entactiniidae
Astroentactinia multispinoasa
C category
synonym of Stigmosphaerostylus
Entactinia vulgaris Won 1983
C category
Entactinia cf. tortispina (Ormiston and Lane 1976)
R category
Protozoa - Nassellaria - Archocyrtiidae
Archocyrtium lagabriellei Gourmelon 1987
R category
Archocyrtium diductum Deflandre 1973
R category
Protozoa - Albaillellaria - Albaillellidae
Albaillella indensis Won 1983
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]