N01-06, Na Trang village, Lang Son City (Triassic of Vietnam)

Also known as NT01-07

Where: Vietnam (21.9° N, 106.7° E: paleocoordinates 6.3° N, 98.3° E)

• coordinate stated in text

• small collection-level geographic resolution

When: Bac Thuy Formation, Smithian (251.3 - 247.2 Ma)

• Upper Smithian

• bed-level stratigraphic resolution

Environment/lithology: lithified, gray mudstone and lithified, nodular limestone

• Elongated spherical calcareous nodules (5-60 cm in length) in dark mudstone

Size class: macrofossils

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: T. Komatsu, Y. Shigeta, T. H. Dang, C. T. Dinh, T. Maekawa and G. Tanaka. 2013. Crittendenia (Bivalvia) from the Lower Triassic (Olenekian) Bac Thuy Formation, An Chau Basin, northern Vietnam. Paleontological Research 17:1-11 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 143597: authorized by Matthew Clapham, entered by Matthew Clapham on 25.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Protozoa
 Entactinaria - Tetrentactiniidae
Multisphaera triassorobusta
Multisphaera triassorobusta Takahashi 2014 radiolarian
 Entactinaria - Palaeoscenidiidae
Parentactinia nakatsugawaensis
Parentactinia nakatsugawaensis Sashida 1983 radiolarian
 Entactinaria - Thalassothamnidae
Triassothamnus verticillatus
Triassothamnus verticillatus Dumitrica 1980 radiolarian
 Entactinaria - Entactiniidae
? Plenoentactinia terespongia, ? Retentactinia parvisphaera
? Plenoentactinia terespongia Takahashi 2014 radiolarian
? Retentactinia parvisphaera Takahashi 2014 radiolarian
 Spumellaria - Oertlispongidae
Paroertlispongus spinorientalis
Paroertlispongus spinorientalis Takahashi 2014 radiolarian
Conodonta
 Ozarkodinida - Gondolellidae
? Icriospathodus zaksi, Novispathodus "sp. A", Novispathodus pingdingshanensis
? Icriospathodus zaksi Buryi 1979 conodont
Novispathodus "sp. A" Orchard 2005 conodont
Novispathodus pingdingshanensis Zhao and Orchard 2007 conodont
Cephalopoda
 Ceratitida - Xenoceltitidae
Xenoceltites variocostatus
Xenoceltites variocostatus Brayard and Bucher 2008 ceratite
Bivalvia
 Pectinida - Claraiidae
Crittendenia australasiatica, Crittendenia langsonensis
Crittendenia australasiatica Krumbeck 1924 scallop
Crittendenia langsonensis Komatsu and Dang 2013 scallop
Not listed at this level in Shigeta et al., 2014
 Pectinida - Hunanopectinidae
Leptochondria bittneri
Leptochondria bittneri Kiparisova 1938 scallop
 Ostreida - Posidoniidae
Bositra limbata
Bositra limbata Guo 1985 oyster