Seventymile terrane, Eagle D-3 quadrangle, Locality 7a (Permian of the United States)

Also known as USGS collection 24951-PC

Where: Alaska (64.9° N, 142.1° W: paleocoordinates 38.7° N, 30.8° W)

When: Guadalupian (273.0 - 259.5 Ma)

• Unit Pq of Foster (1976); may be correlated with the lower sandstone unit of the Tahkandit Limestone

Environment/lithology: marine; lithified, fine-grained, quartzose, calcareous sandstone and lithified siltstone

• Unmetamorphosed brachiopod-bearing calcareous, fine-grained quartzitic sandstone and siltstone in a fault slice between amphibolite-facies metamorphic rocks on the north and an igneous dike on the south.

Size class: macrofossils

Collected by H. L. Foster in 1973

Primary reference: C. Dusel-Bacon and A. G. Harris. 2001. New occurrences of Late Paleozoic and Triassic fossils from the Seventymile and Yukon-Tanana terranes, east-central Alaska, with comments on previously published occurrences in the same area. United States Geological Survey Professional Paper 1678:5-25 [A. Miller/S. Kolbe/S. Kolbe]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 99524: authorized by Arnold Miller, entered by Sarah Kolbe on 15.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

• Identified by J. T. Dutro, Jr.
Show authors, comments, and common names
unclassified
  -
? Tityrophora sp.
Rhynchonellata
 Spiriferida -
Spiriferoidea indet.
 Spiriferida - Spiriferellidae
Spiriferella sp.
Spiriferella sp. Tschernyschew 1902
 Spiriferida - Trigonotretidae
Neospirifer sp.
Neospirifer sp. Fredericks 1919
Strophomenata
 Productida - Paucispiniferidae
Anemonaria sp.
Anemonaria sp. Cooper and Grant 1969
 Productida - Productidae
Yakovlevia sp.
Yakovlevia sp. Fredericks 1925
 Productida - Linoproductidae
Megousia sp.
Megousia sp. Muir-Wood and Cooper 1960