Alaska Paleontological Database
Guest
Login
Home
Search
Quadrangle
Sample
Reference
Map View
E and R Reports
Publications
Letters
Sample Detail
of
Sample:
Sample No. 69ADt26
Locality:
Field No. 69ADt26
Description:
Tributary of Ivishak River, 15.5 miles S. 30
o
W of Cashe One Lake. Concretions in black, silty, ferruginous shale; position in section unknown.
Location:
Alaska Quadrangle:
Mt Michelson
Lat.: 69
o
06
'
"
Long.: 147
o
43
'
"
Reference
Title:
Report on Referred Fossils
, 1969 (11/17)
The following of your collections from the Ivishak Member of the Sadlerochit Formation were forwarded to me by Tom Dutro.
Report by:
Norman J. Silberling
Referred by:
Robert L. Detterman
Age:
Early Triassic
Formation:
Ivishak Formation
Occurrence(s)
No.
Group
Name
Qty
Notes
1
Ammonoids
Ophiceras commune Spath
This is the index ammonite of the Commune Zone of late Griesbachian age.