Where: Vietnam (21.7° N, 106.7° E: paleocoordinates 6.1° N, 98.3° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Bac Thuy Formation, Smithian (251.3 - 247.2 Ma)
• bed-level stratigraphic resolution
Environment/lithology: slope; lithified limestone
Size class: 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 155483: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2014
Creative Commons license: CC BY (attribution)
Taxonomic list
| Conodonta | |
|
Conodonta "genus indet. A" Pander 1856 conodont
Conodonta "genus indet. B" Pander 1856 conodont | |
Guangxidella "sp. A", Guangxidella bransoni, Discretella robustus, Discretella discreta, Conservatella conservativa, Novispathodus ex gr. waageni, Neospathodus "sp. A", Neospathodus pakistanensis
Guangxidella "sp. A" Zhang and Yang 1991 conodont
Guangxidella bransoni Muller 1956 conodont
Discretella robustus Wang and Wang 1976 conodont
Discretella discreta Müller 1956 conodont
Conservatella conservativa Müller 1956 conodont
Novispathodus ex gr. waageni Sweet 1970 conodont
Neospathodus "sp. A" Mosher 1968 conodont
Neospathodus pakistanensis Sweet 1970 conodont | |
| Gastropoda | |
|
? Worthenia sp. de Koninck 1883 snail | |
|
Atorcula sp. Nutzel 1998 snail | |
|
Naticopsis "sp. A" M'Coy 1844 snail | |