Where: Nepal (29.5° N, 83.0° E)
• Paleocoordinates: 45.3° S, 53.1° E (Wright 2013)
• 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: CC0 (CC0)
Taxonomic list
Bivalvia | |
Dolponella sulcata Waterhouse 1978 scallop | |
"Atomodesma cf. exarata" = Atomodesma exaratum
"Atomodesma cf. exarata" = Atomodesma exaratum Beyrich 1865 clam | |
Rhynchonellata | |
Spiriferella rajah, "Spiriferella oblata" = Arcullina oblata
Spiriferella rajah Salter 1865
"Spiriferella oblata" = Arcullina oblata Waterhouse 1978 | |
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis
"Neospirifer ravaniformis" = Betaneospirifer ravaniformis Waterhouse 1978 | |
Pteroplecta laminatus Waterhouse 1978 | |
? Cleiothyridina "sp. A" Buckman 1906
Cleiothyridellina accoliformis Waterhouse 1978 | |
? Hustedia sp. Hall and Clarke 1893 | |
| |
Licharewiidae indet. Sliusareva 1958 | |
? Paraspiriferina sp. Reed 1944 | |
Strophomenata | |
"Arctitreta plata" = Streptorhynchus plata
"Arctitreta plata" = Streptorhynchus plata Waterhouse 1978 | |
"Rugaria nisalensis" = Nisalarinia nisalensis
"Rugaria nisalensis" = Nisalarinia nisalensis Waterhouse 1978 | |
Compressoproductus ? planus, "Cancrinella polliciformis" = Costatumulus polliciformis
"Cancrinella polliciformis" = Costatumulus polliciformis Waterhouse 1978 | |
Marginalosia kalikotei, "Platyconcha grandis" = Biplatyconcha grandis
Marginalosia kalikotei Waterhouse 1975
"Platyconcha grandis" = Biplatyconcha grandis Waterhouse 1975 | |
Megasteges nepalensis Waterhouse 1975 |