Hong Ngai type section, Dong Van (Triassic of Vietnam)

Where: Ha Giang, Vietnam (23.2° N, 105.2° E: paleocoordinates 5.6° N, 96.5° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Hong Ngai Formation, Early/Lower Triassic (252.2 - 247.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; sandy, calcareous mudstone

Size class: macrofossils

Primary reference: T. Komatsu, H. Dang Tran, and J.-H. Chen. 2006. Depositional Environments and Fossil Bivalves in the Lowermost Parts of the Triassic Systems in North Vietnam and South China . Journal of Geography 115(4):470-483 [A. Dunhill/B. Allen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 201713: authorized by Alex Dunhill, entered by Bethany Allen on 22.05.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Lingulata
 Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797
Bivalvia
 Ostreida - Pteriidae
Pteria ussurica Kiparisova 1938 pearl oyster
 Ostreida - Bakevelliidae
Towapteria scythica Wirth 1936 oyster
 Pectinida - Claraiidae
Claraia wangi Patte 1935 scallop
 Pectinida - Aviculopectinidae
 Myalinida - Myalinidae
Promyalina sp. Kittl 1903 clam