HTT-6, Chang Dao radiolarians, Thailand: Smithian - Spathian, Thailand

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Ethmosphaeridae
? Cenosphaera rugosa n. sp.
Protozoa - Entactinaria - Palaeoscenidiidae
Parentactinia nakatsugawensis
[entered as Paraentactinia nakatsugawensis]
Protozoa - Entactinaria - Eptingiidae
Spongostephanidium longispinosum Sashida 1991
recombined as Cryptostephanidium longispinosum
Protozoa - Entactinaria - Thalassothamnidae
Archaeothamnulus sp. Dumitrica 1982
synonym of Triassothamnus
[entered as Archaeotamunulus sp.]
Protozoa - Nassellaria - Archaeosemantidae
Archaeosemantis sp. Dumitrica 1982
Archaeosemantis venusta
Tandarnia sp. Dumitrica 1982
Protozoa - Nassellaria - Plagiacanthidae
Tetrarchiplagia sp. Dumitrica 1982
see common names

Geography
Country:Thailand
Coordinates: 19.5° North, 99.0° East (view map)
Paleocoordinates:11.1° South, 86.6° East
Basis of coordinate:stated in text
Geographic resolution:hand sample
Time
Period:Triassic Epoch:Early/Lower Triassic
Stage:Olenekian 10 m.y. bin:Triassic 1
Key time interval:Smithian - Spathian
Age range of interval:251.30000 - 247.20000 m.y. ago
Stratigraphy
Formation:Fang Chert
Local section:HTT Local bed:3.2 m
Stratigraphic resolution:bed
Stratigraphy comments: Informal formation name of Bunopas (1981). 0 horizon in P-T boundary.
Parentactinia nakatsugawaensis zone
Lithology and environment
Primary lithology:gray lithified chert
Lithology description: dark gray bedded chert
Environment:basinal (siliceous)
Taphonomy
Modes of preservation:body,original silica
Size of fossils:microfossils
Preservation of anatomical detail:medium
Collection methods and comments
Collection methods:chemical,hydroflouric,field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:64511
Authorizer:W. Kiessling Enterer:W. Kiessling
Research group:micropaleontology
Created:2006-09-09 11:20:05 Last modified:2006-09-09 14:20:05
Access level:the public Released:2006-09-09 11:20:04
Creative Commons license:CC BY
Reference information

Primary reference:

18623. K. Sashida, H. Igo, S. Adachi, K. Ueno, Y. Kajiwara, N. Nakornsri, and A. Sardsud. 2000. Late Permian to Middle Triassic radiolarian faunas from northern Thailand. Journal of Paleontology 74(5):789-811 [W. Kiessling/W. Kiessling/P. Wagner]