Son La (Permian of Vietnam)

Where: Vietnam (21.3° N, 103.9° E: paleocoordinates 1.3° S, 95.0° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Yenduyet Formation, Changhsingian (254.2 - 252.2 Ma)

• 6 m below the top of the Yenduyet Formation. Early Changhsingian age, indicated by Palaeofusulina prisca, Waagenophyllum simplex and Colaniella parva in limestone bed.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siltstone

• Shale and siliceous siltstone.

Size class: macrofossils

Preservation: mold/impression

Primary reference: G. R. Shi and S.-Z. Shen. 1998. A Changhsingian (Late Permian) brachiopod fauna from Son La, northwest Vietnam. Journal of Asian Earth Sciences 16(5-6):501-511 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 42910: authorized by David Bottjer, entered by Matthew Clapham on 06.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Schuchertellidae
Schuchertella cf. cooperi Grant 1976
2 DV, 1 conjoined
 Orthotetida - Derbyiidae
Derbyia sp. Waagen 1884
1 VV
 Strophomenida - Rugosochonetidae
"Waagenites soochowensis" = Fusichonetes soochowensis
"Waagenites soochowensis" = Fusichonetes soochowensis Chao 1928
1 DV
 Productida -
"Marginiferinae indet." = Marginiferoidea, "Spinomarginifera chenyaoyenensis" = Spinomarginifera chengyaoyenensis
"Marginiferinae indet." = Marginiferoidea Stehli 1954
1 conjoined
"Spinomarginifera chenyaoyenensis" = Spinomarginifera chengyaoyenensis Huang 1932
2 DV
Rhynchonellata
 Orthida - Rhipidomellidae
Rhipidomella hessensis King 1931
1 VV, 1 conjoined
 Orthida - Schizophoriidae
Acosarina minuta Abich 1878
1 VV, 1 conjoined
 Orthida - Enteletidae
Peltichia kwangtungensis Zhan 1979
2 VV, 11 DV