BT02-03, Bac Thuy section (Triassic of Vietnam)

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: Owenites koeneni 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 155493: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Arctoceratidae
Nammalites sp. Brühwiler et al. 2010 ceratite
 Ceratitida - Proptychitidae
Leyeceras rothi Brayard and Bucher 2008 ceratite
 Ceratitida - Dieneroceratidae
? Dieneroceras goudemandi Brayard and Bucher 2008 ceratite
 Ceratitida - Kashmiritidae
Preflorianites radians Chao 1959 ceratite
 Ceratitida - Ussuriidae
Parussuria compressa Hyatt and Smith 1905 ceratite
 Ceratitida - Paranannitidae
Owenites koeneni Hyatt and Smith 1905 ceratite
Gastropoda
 Murchisoniina - Zygopleuridae
Ampezzopleura sp. Bandel 1991 snail
 Neritoidea - Naticopsidae
? Abrekopsis sp. Kaim 2009 snail
Naticopsis "sp. A" M'Coy 1844 snail
Naticopsis "sp. B" M'Coy 1844 snail
Conodonta
  -
 Ozarkodinida - Gondolellidae
Discretella discreta Müller 1956 conodont
Discretella robustus Wang and Wang 1976 conodont
Guangxidella bransoni Muller 1956 conodont