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, Spathian (251.3 - 247.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified 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: 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 155529: authorized by Matthew Clapham, entered by Matthew Clapham on 16.04.2014

Creative Commons license: CC BY (attribution)