FA-3-3, Chang Dao radiolarians, Thailand (Triassic to of Thailand)

Where: Thailand (19.5° N, 99.0° E: paleocoordinates 11.1° S, 86.6° E)

• coordinate stated in text

• hand sample-level geographic resolution

When: Fang Chert Formation, Smithian to Smithian (251.3 - 247.2 Ma)

• Informal formation name of Bunopas (1981). 0 horizon in P-T boundary. Parentactinia nakatsugawaensis zone

• bed-level stratigraphic resolution

Environment/lithology: basinal (siliceous); lithified, gray chert

• dark gray bedded chert

Size class: microfossils

Preservation: original silica

Collection methods: chemical, hydroflouric,

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 64504: authorized by Wolfgang Kiessling, entered by Wolfgang Kiessling on 09.09.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Protozoa
 Radiolaria - Ethmosphaeridae
? Cenosphaera rugosa n. sp. radiolarian
 Entactinaria - Thalassothamnidae
"Archaeothamnulus sp." = Triassothamnus
"Archaeothamnulus sp." = Triassothamnus Kozur and Mostler 1981 radiolarian
[entered as Archaeotamunulus sp.]
 Entactinaria - Palaeoscenidiidae
Parentactinia nakatsugawensis radiolarian
[entered as Paraentactinia nakatsugawensis]
 Entactinaria - Eptingiidae
"Spongostephanidium longispinosum" = Cryptostephanidium longispinosum
"Spongostephanidium longispinosum" = Cryptostephanidium longispinosum Sashida 1991 radiolarian
 Nassellaria - Plagiacanthidae
Tetrarchiplagia sp. Dumitrica 1982 radiolarian
 Nassellaria - Archaeosemantidae
Archaeosemantis sp. Dumitrica 1982 radiolarian
Tandarnia sp. Dumitrica 1982 radiolarian