Between Ban Pak-Lung and Xieng-Men (graywacke) (Permian of Laos)

Where: Laos (19.9° N, 102.1° E: paleocoordinates 11.8° S, 97.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Capitanian (265.1 - 259.9 Ma)

• Level 10 of Deprat, 1913. The greywacke bed was considered a little younger than the Lepidolina multiseptata fusulinid zone of the Sisophon Limestone, western Cambodia, by Deprat (1913). Based on faunal correlations, Waterhouse (1973; 1976) later considered Level 10 as partly correlative with Sisophon Member D (middle−late? Capitanian) of Ishii et al. (1969) where L. multiseptata persists from Member C.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

Size class: macrofossils

Collected by Mansuy

Primary reference: H. Mansuy. 1912. Mission du Laos. I. Géologie des environs de Luang-Prabang. Mémoires du Service Géologique de l'Indochine 1(4):1-32 [G. Webster/G. Webster/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 125065: authorized by Matthew Clapham, entered by Matthew Clapham on 02.03.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Phillipsiidae
Pseudophillipsia acuminata n. sp. Mansuy 1912 trilobite
Strophomenata
 Productida - Aulostegidae
""Productus" ? nystianus" = Rugicostella nystiana
""Productus" ? nystianus" = Rugicostella nystiana de Koninck 1842
 Productida - Lyttoniidae
"Lyttonia cf. tenuis" = Eolyttonia tenuis
"Lyttonia cf. tenuis" = Eolyttonia tenuis Waagen 1883
 Productida - Monticuliferidae
"Productus paviei n. sp." = Monticulifera paviei
"Productus paviei n. sp." = Monticulifera paviei Mansuy 1912
 Productida - Linoproductidae
Stepanoviella mekongensis n. sp. Mansuy 1912
Productus lineatus var. mekongensis
Stenolaemata
 Cryptostomata - Fenestellidae
"Fenestella cf. retiformis" = Rectifenestella retiformis
"Fenestella cf. retiformis" = Rectifenestella retiformis von Schlotheim 1816
Echinoidea
  - Archaeocidaridae
? Archaeocidaris sp. M'Coy 1844 sea urchin