of
Sample: Sample No. 71-ARh-131
Locality: Field No. 71-ARh-131
Description: No Data
Location: Alaska Quadrangle: Nabesna
Reference
Title: Letter from Silberling to Richter ,  1971 (11/17)
Mr. Donald H. Richter
c/o Alaska Mineral Resources Branch
U.S. Geological Survey
345 Middlefield Road
Menlo Park, California

Dear Mr. Richter:

Your identification of Daonella in your 1971 collections from the Nabesna quad is correct. Both 71-ARh-131 and 71-PCL-305 contain D. degeeri Bohm. This is a better name for the “mid” Ladinian (upper Middle Triassic) species that occurs just beneath the Nikolai Greenstone in the McCarthy C-4 quad. And was referred to D. cf. subquadrata on the GQ Map by Mackeveet (1970).

In collection 71-ARh-151, D. frami Kittl is represented in addition to D. degeeri; the age interpretation is, of course, the same.

Representative specimens from these collections have been added to the reference collections of the P&S Branch in Menlo Park, and the remaining scraps of matrix have been returned to the Alaskan Branch.

Report by: Norman J. Silberling
Referred by: Donald H. Richter
Age: Ladinian
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Daonella degeeri Bohm