USNM9049, Tapan Wahan, southern Khisor Range (Permian of Pakistan)

Where: Northwest Frontier, Pakistan (32.2° N, 70.9° E: paleocoordinates 40.5° S, 55.4° E)

• coordinate stated in text

• outcrop-level geographic resolution

When: Chhidru Formation, Changhsingian (254.2 - 252.2 Ma)

• Bed 3 is top bed of White Sandstone Unit, the top bed of the Chhidru Formation. 8 feet thick.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; white sandstone

• Sandstone, white, friable (not studied in detail).

Size class: macrofossils

Primary reference: R. E. Grant. 1970. Brachiopods from the Permian-Triassic boundary beds and age of Chhidru Formation, West Pakistan. Department of Geology, University of Kansas Special Publication 4:117-151 [D. Bottjer/M. Clapham/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41557: authorized by David Bottjer, entered by Matthew Clapham on 16.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida -
Chonetoidea indet.
Chonetoidea indet. Bronn 1862
 Orthotetida - Derbyiidae
Derbyia postplicatella3
Derbyia postplicatella3 Waterhouse and Gupta 1983
 Orthotetida - Schuchertellidae
Kiangsiella sp.
Kiangsiella sp. Chao 1927
 Productida - Schrenkiellidae
"Linoproductus periovalis" = Schrenkiella periovalis3
"Linoproductus periovalis" = Schrenkiella periovalis3 Waterhouse and Gupta 1983
 Productida - Productellidae
Chonetella nasuta1
Chonetella nasuta1 Waagen 1884
 Productida - Echinoconchidae
? Waagenoconcha sp.
 Productida - Richthofeniidae
Richthofenia sp.
 Productida - Lyttoniidae
"Lyttonia sp." = Leptodus
"Lyttonia sp." = Leptodus Kayser 1883
 Productida - Aulostegidae
Aulosteges sp.
Aulosteges sp. von Helmersen 1847
Rhynchonellata
 Terebratulida - Gillediidae
Hemiptychina sp.
Hemiptychina sp. Waagen 1882
 Terebratulida - Dielasmatidae
Dielasmatidae indet., Whitspakia "sp. 1"
Dielasmatidae indet. Schuchert 1913
Whitspakia "sp. 1" Stehli 1964
 Spiriferinida - Paraspiriferinidae
Callispirina manangensis2
Callispirina manangensis2 Waterhouse 1983
 Athyridida - Neoretziidae
Hustedia sp.
Hustedia sp. Hall and Clarke 1893
 Athyridida - Athyrididae
Spirigerella sp., Cleiothyridina pijaensis2
Spirigerella sp. Waagen 1883
Cleiothyridina pijaensis2 Waterhouse 1983
 Spiriferida - Trigonotretidae
Neospirifer sp.
Neospirifer sp. Fredericks 1919
 Spiriferida - Spiriferellidae
? Spiriferella sp.
? Spiriferella sp. Tschernyschew 1902
 Spiriferida - Martiniidae
Martinia acutomarginiformis3
Martinia acutomarginiformis3 Waterhouse and Gupta 1983
 Orthida - Schizophoriidae
Acosarina minuta3, Orthotichia "sp. 2"
Acosarina minuta3 Abich 1878
Orthotichia "sp. 2" Hall and Clarke 1892
 Orthida - Enteletidae
Enteletes granti3
Enteletes granti3 Waterhouse and Gupta 1983
1Shen et al. 2000; 2Waterhouse 1983; 3Waterhouse and Gupta 1983