W1275, Section 13, Popagaon, Karnali (Permian of Nepal)

Where: Nepal (29.6° N, 82.8° E: paleocoordinates 50.1° S, 61.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nisal Member (Senja Formation), Changhsingian (254.2 - 252.2 Ma)

• Correlation is difficult, but stratigraphic position suggests Changhsingian age.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, original calcite

Collection methods: Some collections were of individual specimens, others as large as possible under the circumstances, with a few localities represented by rock weighing more than 50 kg. Most collections were made from just over 50 measured sections, and are under good stratigraphic control.

Primary reference: J. B. Waterhouse. 1975. New Permian and Triassic brachiopod taxa. Papers - Department of Geology, University of Queensland 7(1):1-23 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43190: authorized by David Bottjer, entered by Matthew Clapham on 10.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Productida - Aulostegidae
Saeptathaerus latus2 Waterhouse and Chen 2007
Megasteges nepalensis n. gen. n. sp. Waterhouse 1975
 Productida - Strophalosiidae
"Echinalosia kalikotei n. sp." = Marginalosia kalikotei, "Platyconcha grandis" = Biplatyconcha grandis1
"Echinalosia kalikotei n. sp." = Marginalosia kalikotei Waterhouse 1975
"Platyconcha grandis" = Biplatyconcha grandis1 Waterhouse 1975
 Productida - Monticuliferidae
"Cancrinella polliciformis n. sp." = Costatumulus polliciformis1, "Linoproductus crassicostina" = Costatumulus crassicostatina4
"Cancrinella polliciformis n. sp." = Costatumulus polliciformis1 Waterhouse 1978
"Linoproductus crassicostina" = Costatumulus crassicostatina4 Waterhouse and Gupta 1983
 Productida - Linoproductidae
Anidanthus fusiformis1 Waterhouse 1966
 Productida - Rugosochonetidae
"Rugaria nisalensis n. sp." = Nisalarinia nisalensis1
"Rugaria nisalensis n. sp." = Nisalarinia nisalensis1 Waterhouse 1978
 Orthotetida - Schuchertellidae
"Arctitreta plata" = Streptorhynchus plata1
"Arctitreta plata" = Streptorhynchus plata1 Waterhouse 1978
Rhynchonellata
 Terebratulida - Beecheriidae
Hoskingia dieneri1 Waterhouse 1978
 Spiriferinida - Spiriferellinidae
Sulcispiriferina plicata3 Waterhouse and Gupta 1982
1 dorsal valve referred to Pteroplecta laminatus by Waterhouse; other specimen remains in P. laminatus
 Spiriferinida - Syringothyrididae
"Punctocyrtella plodowskii" = Syrella plodowskii1
"Punctocyrtella plodowskii" = Syrella plodowskii1 Waterhouse 1978
 Spiriferida - Strophopleuridae
Pteroplecta laminatus1 Waterhouse 1978
 Spiriferida - Trigonotretidae
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis1
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis1 Waterhouse 1978
 Spiriferida - Spiriferellidae
Spiriferella rajah1 Salter 1865
 Spiriferida - Elythidae
? Phricodothyris sp.1 George 1932
Bivalvia
 Pectinida - Aviculopectinidae
? Clavicosta rugatula1 Waterhouse 1978 scallop
 Pectinida - Heteropectinidae
Etheripecten sp.1 Waterhouse 1963 scallop
 Pectinida - Pterinopectinidae
? Dunbarella sp.1 Newell 1938 scallop
abundance listed as 1?
 Pectinida - Pseudomonotidae
Pseudomonotidae indet.1 Newell 1938 scallop
 Pectinida - Dolponellidae
Dolponella sulcata1 Waterhouse 1978 scallop
 Pteriacea -
Pteriacea indet.1 Gray 1847 clam
Gastropoda
 Bellerophontida - Bellerophontidae
Bellerophontidae indet.1 M'Coy 1851 snail
 Murchisoniina - Gosseletinidae
Collabrina lunulata1 Waterhouse 1978 snail