Also known as NT01-04
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, shelly/skeletal, gray limestone
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 143595: authorized by Matthew Clapham, entered by Matthew Clapham on 25.04.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Xenoceltites variocostatus Brayard and Bucher 2008 ceratite | |
Trematoceras sp. Eichwald 1851 | |
Bivalvia | |
Crittendenia australasiatica Krumbeck 1924 scallop
Crittendenia langsonensis Komatsu and Dang 2013 scallop |