W1269, 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 43187: authorized by David Bottjer, entered by Matthew Clapham on 10.08.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Orthotetida - Schuchertellidae
"Arctitreta plata" = Streptorhynchus plata
"Arctitreta plata" = Streptorhynchus plata Waterhouse 1978
 Productida - Monticuliferidae
"Cancrinella polliciformis" = Costatumulus polliciformis Waterhouse 1978
Compressoproductus ? planus Waterhouse 1978
abundance listed as 1?
 Productida - Strophalosiidae
"Platyconcha grandis" = Biplatyconcha grandis Waterhouse 1975
Marginalosia kalikotei Waterhouse 1975
 Productida - Aulostegidae
Megasteges nepalensis Waterhouse 1975
 Strophomenida - Rugosochonetidae
"Rugaria nisalensis" = Nisalarinia nisalensis
"Rugaria nisalensis" = Nisalarinia nisalensis Waterhouse 1978
Rhynchonellata
 Spiriferida - Strophopleuridae
Pteroplecta laminatus Waterhouse 1978
 Spiriferida - Trigonotretidae
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis Waterhouse 1978
 Spiriferida - Spiriferellidae
Spiriferella rajah, "Spiriferella oblata" = Arcullina oblata
Spiriferella rajah Salter 1865
"Spiriferella oblata" = Arcullina oblata Waterhouse 1978
 Spiriferinida - Paraspiriferinidae
 Spiriferinida - Licharewiidae
Licharewiidae indet. Sliusareva 1958
 Athyridida - Athyrididae
 Athyridida - Neoretziidae
? Hustedia sp. Hall and Clarke 1893
 Rhynchonellida -
Rhynchonellida indet. Kuhn 1949
"Rhynchonellacea indet."
Bivalvia
 Pectinida - Dolponellidae
Dolponella sulcata Waterhouse 1978 scallop
 Myalinida - Atomodesmatidae
"Atomodesma cf. exarata" = Atomodesma exaratum
"Atomodesma cf. exarata" = Atomodesma exaratum Beyrich 1865 clam