W1267, Karnali Unspecified (Permian of Nepal)

Where: Nepal (29.5° N, 83.0° E: paleocoordinates 50.3° S, 61.9° E)

• coordinate estimated from map

• 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. 1978. Permian Brachiopoda and Mollusca from north-west Nepal. Palaeontographica Abteilung A 160(1-6):1-175 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43185: authorized by David Bottjer, entered by Matthew Clapham on 10.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Rugosochonetidae
"Rugaria nisalensis" = Nisalarinia nisalensis
"Rugaria nisalensis" = Nisalarinia nisalensis Waterhouse 1978
 Productida - Aulostegidae
Megasteges nepalensis Waterhouse 1975
 Productida - Strophalosiidae
Marginalosia kalikotei Waterhouse 1975
 Productida - Monticuliferidae
"Cancrinella polliciformis" = Costatumulus polliciformis
"Cancrinella polliciformis" = Costatumulus polliciformis Waterhouse 1978
Rhynchonellata
 Spiriferida - Spiriferellidae
Spiriferella rajah Salter 1865
 Spiriferida - Trigonotretidae
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis Waterhouse 1978
 Spiriferida - Strophopleuridae
Pteroplecta laminatus Waterhouse 1978
 Spiriferinida -
"Spiriferinacea "indet. B"" = Spiriferinoidea
"Spiriferinacea "indet. B"" = Spiriferinoidea Davidson 1884
 Spiriferinida - Paraspiriferinidae
Yaonoiella himalayanica Waterhouse 1983
 Athyridida - Athyrididae
Cleiothyridellina accoliformis n. gen. n. sp. Waterhouse 1978
Bivalvia
 Pectinida - Aviculopectinidae
? Clavicosta rugatula n. sp. Waterhouse 1978 scallop