Reference Detail of

Report on Referred Fossils
Edit Reference Add/Edit Sample Sample List Show Map
Stratigraphic range: Middle Devonian; Carboniferous?
Kinds of fossils: Pelecypods, echinodermal debris
Quadrangle or area: Hughes quad., west-central
Shipment No.: A-84-27
Referred by: Patton, William W., Jr.
Report prepared by: Dutro, J. Thomas, Jr.
Date: 12/03/1984

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.

User Note module to be added
84APa103D , Hughes , Hughes quad., T. 18 N., R. 22 E.; 66 deg. 58 min. N., 154 deg. 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.
bivalve fragments, ..., size and thickness suggest pieces of Pycinodesma shells
84APa103B , Hughes , Same locality as above, except from S. side of saddle about 40 m above low point in saddle; one meter thick slab of silicified limestone overlain and underlain by dark chert with possible radiolaria. Collector: W.W. Patton, Jr., 1984.
indeterminate echinoderm debris
one fragmentary rugose coral that is generically indeterminate