Sample Detail of
Sample: Sample No. 66ATr82.3 -- USGS No. 8161-SD
Locality: Field No. 66ATr82.3
Description: Baird Mtns. quad., lat. 67o 44.15'N., long. 159o 27.5' W.; about 200 ft. above base of carbonate unit; the following three collections in a 300-foot carbonate section above 66ATr83.3. Collector: Tailleur, 1966.
Location: Alaska Quadrangle: Baird Mts C-1
Lat.: 67o44.15 ' Long.: 159o27.5 '
Reference
Title: Report on Referred Fossils ,  1968 (05/29)
Report by: J. Thomas Dutro , Jr.
Referred by: William P. Brosge
Age: Ludlovian (Silurian, probably of Ludlow age)
Comment:SILURIAN COLLECTIONS

The four collections from the Silurian? dolomite unit are, indeed, of Silurian age. Abundant large specimens of Conchidium, almost certainly of the kind referred by Kirk and Amsden to Conchidium alaskense (Prof. Paper 233-C, p. 55), occur in USGS 8161-SD. These are probably of Ludlow age and suggest assigning the entire dolomite unit to the Silurian.

Occurrence(s)
No. Group Name Qty Notes
1 Brachiopods Conchidium cf. C. alaskense Kirk and Amsden