Sample Detail of
Sample: Sample No. 84APa103D
Locality: Field No. 84APa103D
Description: Hughes quad., T. 18 N., R. 22 E.; 66o 58 min. N., 154o 01 min. W.; Helpmejack Hills, 25 km west of confluence of Helpmejack Creek and Alatna River, in saddle between two knobs at elev. 2700 ft.; from N. Side of saddle about 3 m above low point in saddle; basalt tuff with clasts of limestone and chert. Collection: W.W. Patton, Jr., 1984.
Location: Alaska Quadrangle: Hughes D-3
Township&Range: T18N R22E
Lat.: 66o58' " Long.: 154o01' "
Reference
Title: Report on Referred Fossils ,  1984 (12/03)
This report covers two collections from the Helpmejack Hills; neither has definitive, identifiable megafossils but both contain fossils that are suggestive of Devonian and Carboniferous units known elsewhere in the Brooks Range.
Report by: J. Thomas Dutro , Jr.
Referred by: William W. Patton , Jr.
Age: Givetian (Middle Devonian (Givetian))
Comment:MIDDLE DEVONIAN

This collection contains a large number of bivalve fragments, aligned parallel to bedding. All the fragments are recrystallized, but the size and thickness suggest pieces of Pycinodesma shells that are found elsewhere in rocks of Middle Devonian (Givetian) age.

Occurrence(s)
No. Group Name Qty Notes
1 Bivalves bivalve fragments, ..., size and thickness suggest pieces of Pycinodesma shells