Sample Detail of
Sample: Sample No. 61ABa1493
Locality: Field No. 61ABa1493
Description: Northeast bank of Tienashevun Slough, 1,000 feet N of Salmon Village, Black River C-4 Quad. Probably Devonian limestone strat. position not known. Lat. 66o 34.3'N, Long. 142o 33.8'W, coords (12.0, 4.9) )[from Request for Examination of Fossils (Transmittal) sheet submitted by Earl Brabb, Oct. 12, 1961] [Oliver et al., 1975, p. 34 provide following description: 66o 34.3', 141o 33.8'); Northeast bank of Tienasheavun Slough, 1,000 feet NW of Salmon Village, Black River C-4 quadangle, Alaska. (Lat. 66°34.3' N; Long. 142°33.8'W). Coral from this locality shipped previously. P &S number A-61-18. Massive, medium dark gray, fine-grained limestone with abundant black chert. (from E&R report by R.J. Ross, Jr. to Earl Brabb, dataed 6/29/62 (Shipment A-62-8)
Location: Alaska Quadrangle: Black River C-4
Lat.: 66o34.3 ' Long.: 142o33.8 '
Reference
Title: Report on Referred Fossils ,  1962 (04/13)
Two collections in this shipment included one coral each.
Report by: William A. Oliver , Jr.
Referred by: Earl E. Brabb
Age: Late Ordovician
Comment:Upper Ordovician

Age assignment is based on other corals from this same collection which were covered in report A-61-18.

Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals indeterminate horn coral fragment

Title: Report on Referred Fossils ,  1961 (12/05)
Pre-Mississippian corals are covered in this report; other groups of fossils will be reported on separately. Please send all future Washington shipments directly to the P. and S. Branch, 338 U.S. National Museum; %Mrs. Kathryn Karlson.
Report by: William A. Oliver , Jr.
Referred by: Earl E. Brabb
Age: Late Ordovician
Comment:This is the Upper Ordovician Bighorn-Red River coral fauna of Duncan (1956, USGS Bull. 1021-F, p. 219-220).
Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals Bighornia sp. 7 specimens
2 Rugose Corals angulate streptelasmatid corals
3 Tabulate Corals favositoid coral

Title: Ordovician, Silurian, and Devonian corals of Alaska ,  1975
Abstract

Corals are common in Ordovician, Silurian, and Devonian rocks from Alaska, but few have been described or illustrated. Most of the known occurrences of corals are in carbonate rocks, either in an east-west belt of shelf facies across central Alaska that presisted from pre-Ordovician to Middle Devonian time or in a more southerly volcanic graywacke belt of geosynclinal facies that includes significant limestone units in southeastern Alaska. Corals occur in other areas but are less well known.
Annotated lists of corals summarize most collections made by U.S. Geological Survey geologists in the last 15 years. Many of the corals are illustrated.
Report by: William A. Oliver , Jr. , C. W. Merriam , Michael Churkin , Jr.
Age: Late Ordovician
Comment:A few Ordovician corals (table 3) are known from both the Porcupine River area and the Yukon-Nation Rivers area (fig. 7, areas 4 and 5; fig. 8). Most of these are clearly Late Ordovician in age. ... The assemblage contains characteristic elements of the Bighorn-Red River fauna of the Great Basin and Western Canada, as was briefly noted in Oliver (in U.S. Geological Survey, 1962, p. A51). (from Oliver et al., 1975, p. 24)
Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals Bighornia sp. specimen from this locality shown in Pl. 5, fig. 6
2 Rugose Corals Deiracorallium sp. specimen from this locality shown on Pl. 5, fig. 3

Title: Report on Referred Fossils ,  1962 (06/29)
I can not differentiate ages of these two collections, traditionally these would be considered Upper Ordovician and probably correlated with the Maquoketa. Certainly they are Ordovician but whether high Middle or Low-Middle Upper I am not sure. Probably correlate with Stony Mountain Formation of Manitoba.
Report by: Reuben J. Ross , Jr
Referred by: Earl E. Brabb
Age: Middle Ordovician-Late Ordovician
Formation: Unnamed
Comment:Commments by R.J. Ross, Jr.: I can not differentiate ages of these two collections, traditionally these would be considered Upper Ordovician and probably correlated with the Maquoketa. Certainly they are Ordovician but whether high Middle or Low-Middle Upper I am not sure. Probably correlate with Stony Mountain Formation of Manitoba.

This collection now probably is deposited in the U.S.National Museum (Smithsonian Institution in Washington, D.C.

Occurrence(s)
No. Group Name Qty Notes
1 Brachiopods Lepidocyclus aff. L. perlamellosus (Whitfield) proportion the same but smaller size