Amb, "Chonetes Bed", Salt Range (Permian of Pakistan)

Where: Pakistan (32.5° N, 71.9° E: paleocoordinates 46.3° S, 55.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Amb Formation, Wordian (266.9 - 264.3 Ma)

• Chonetes Bed is in the lower part of the "Lower Productus Limestone" (now Amb Formation), which spans the Wordian-Capitanian boundary. Amb Formation contains conodonts Merrilina praedivergens, M. bitteri, Sweetognathus iranicus.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified, black, carbonaceous sandstone

• Black, coaly sandstone

Size class: macrofossils

Primary reference: W. Waagen. 1882. Productus Limestone Fossils, Part IV, fas. 1. Salt Range Fossils, Palaeontologia Indica, Series 13 1(4):329-390 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81501: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2008, edited by Bethany Allen

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Spiriferida - Strophopleuridae
Pterospirifer waageni n. sp.6, Johncarteria sp.6, "Spirifer niger n. sp." = Pteroplecta niger3
Pterospirifer waageni n. sp.6 Waterhouse 2004
Johncarteria sp.6 Waterhouse 2004
Previously identified as Spirifer alatus
"Spirifer niger n. sp." = Pteroplecta niger3 Waagen 1883
 Spiriferida - Ingelarellidae
 Spiriferida - Trigonotretidae
"Neospirifer striatiformis" = Crassispirifer striatiformis7
"Neospirifer striatiformis" = Crassispirifer striatiformis7 Zhang 1976
 Orthida - Rhipidomellidae
"Orthis pecosii" = Rhipidomella pecosi4
"Orthis pecosii" = Rhipidomella pecosi4 Marcou 1858
 Rhynchonellida - Rhynchonellidae
"Rhynchonella" sp.3 Fischer 1809
 Terebratulida - Gillediidae
 Terebratulida - Pseudodielasmatidae
"Hemiptychina sublaevis" = Fredericksolasma sublaevis
"Hemiptychina sublaevis" = Fredericksolasma sublaevis Waagen 1882
 Terebratulida - Dielasmatidae
Dielasma minor n. sp. Waagen 1882
Dielasma truncatum n. sp. Waagen 1882
 Spiriferinida - Spiriferellinidae
 Athyridida - Neoretziidae
"Eumetria grandicosta" = Hustedia grandicosta3
"Eumetria grandicosta" = Hustedia grandicosta3 Davidson 1862
 Athyridida - Athyrididae
"Athyris semiconcava" = Cleiothyridina semiconcava3 Waagen 1883
Strophomenata
 Productida - Productidae
"Productus spiralis" = Costiferina spiralis4
"Productus spiralis" = Costiferina spiralis4 Waagen 1884
 Productida -
"Marginifera ovalis" = Marginifera (Arenaria) ovalis4, "Marginifera transversa n. sp." = Marginifera (Arenaria) transversa5
"Marginifera ovalis" = Marginifera (Arenaria) ovalis4 Waagen 1884
"Marginifera transversa n. sp." = Marginifera (Arenaria) transversa5 Waagen 1884
 Productida - Strophalosiidae
"Strophalosia tenuispina n. sp." = Strophalosia (Heteralosia) tenuispina5, "Strophalosia costata" = Licharewiella costata4, "Strophalosia nodosa n. sp." = Echinalosia nodosa4
"Strophalosia tenuispina n. sp." = Strophalosia (Heteralosia) tenuispina5 Waagen 1884
"Strophalosia costata" = Licharewiella costata4 Waagen 1884
"Strophalosia nodosa n. sp." = Echinalosia nodosa4 Waagen 1884
 Strophomenida - Anopliidae
"Chonetes ambiensis" = Tornquistia ambiensis4
"Chonetes ambiensis" = Tornquistia ambiensis4 Waagen 1884
"Fills whole bed with thousands of individuals"