Where: Vietnam (21.8° N, 106.7° E: paleocoordinates 6.3° N, 98.3° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Xenoceltites variocostatus ammonoid zone, Bac Thuy Formation, Smithian (251.3 - 247.2 Ma)
• bed-level stratigraphic resolution
Environment/lithology: slope; lithified limestone
Size classes: macrofossils, microfossils
Preservation: mold/impression
Collection methods: Repository: All cephalopod, gastropod, ostracod and conodont specimens are reposited at the National Museum of Nature and Science, Tsukuba. Bivalves are stored in the Faculty of Science, Kumamoto University, Kumamoto, and radiolarian specimens are stored at Tokyo Gakugei University, Koganei.
Primary reference: Y. Shigeta, T. Komatsu, T. Maekawa and H. T. Dang. 2014. Olenekian (Early Triassic) stratigraphy and fossil assemblages in northeastern Vietnam. National Museum of Nature and Science Monographs 45:1-309 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 155516: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Xenoceltites variocostatus Brayard and Bucher 2008 ceratite | |
Conodonta | |
Novispathodus pingdingshanensis Zhao and Orchard 2007 conodont
? Icriospathodus zaksi Buryi 1979 conodont | |
Protozoa | |
Triassothamnus verticillatus Dumitrica 1980 radiolarian | |
? Pentactinocarpus aff. acanthicus Dumitrica 1978 radiolarian | |
Multisphaera triassorobusta n. sp.
Multisphaera triassorobusta n. sp. Takahashi 2014 radiolarian | |
? Retentactinia parvisphaera, ? Retentactinia kycungensis, ? Spongentactinia sp., ? Plenoentactinia terespongia n. sp.
? Retentactinia parvisphaera Takahashi 2014 radiolarian
? Retentactinia kycungensis Takahashi 2014 radiolarian
? Spongentactinia sp. Nazarov 1975 radiolarian
? Plenoentactinia terespongia n. sp. Takahashi 2014 radiolarian | |
Tandarnia recoarensis Dumitrica 1982 radiolarian | |
Paroertlispongus spinorientalis n. sp. Takahashi 2014 radiolarian |