USGS 21743-PC, Nation River Tributary, Limestone Spur (Permian of the United States)

Where: Alaska (65.3° N, 141.6° W: paleocoordinates 43.4° N, 27.0° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• Massive limestone

Size class: macrofossils

Primary reference: E. E. Brabb and R. E. Grant. 1971. Stratigraphy and paleontology of the revised type section for the Takhandit Limestone (Permian) in east-central Alaska. United States Geological Survey Professional Paper 703:1-25 [M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 102526: authorized by Matthew Clapham, entered by Matthew Clapham on 16.01.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Rugosochonetidae
? Neochonetes sp., "? Svalbardia sp." = Brachiosvalbardia, "Lissochonetes" sp.
? Neochonetes sp. Muir-Wood 1962
"? Svalbardia sp." = Brachiosvalbardia Ceccolini and Cianferoni 2023
"Lissochonetes" sp. Dunbar and Condra 1932
 Orthotetida - Schuchertellidae
Arctitreta cf. kempei
Arctitreta cf. kempei Andersson 1914
 Productida - Strophalosiidae
"Strophalosia" sp.
 Productida - Linoproductidae
? Linoproductus sp., "Cancrinella" sp.
 Productida - Monticuliferidae
Striatifera sp.
Striatifera sp. Chao 1927
 Productida - Productellidae
Thamnosia cf. arctica, "Krotovia" sp.
Thamnosia cf. arctica Whitfield 1908
"Krotovia" sp. Fredericks 1928
 Productida - Echinoconchidae
Waagenoconcha cf. irginae
Waagenoconcha cf. irginae Stuckenberg 1898
Rhynchonellata
 Rhynchonellida - Rhynchoporidae
Rhynchopora sp.
Rhynchopora sp. King 1865
 Spiriferida - Elythidae
Permophricodothyris sp.