of
Sample: Sample No. 70ARr 421
Locality: Field No. 70ARr 421
Description: Ammonite from west bank of Sadlerochit River.
Location: Alaska Quadrangle: Mt Michelson
Township&Range: T1N R28E Section: Sec.11
Reference
Title: Report on Referred Fossils ,  1973 (03/19)
On the basis of the fossils in the collections, little can be said about their paleoecology. All of these collections are, of course, marine, and those from the Shublik containing "flat clams," the bivalve Gryphaea, and phosphatic molluscan molds suggest an outer shelf depositional environment.
Report by: K. M. Nichols , Norman J. Silberling
Referred by: H. N. Reiser
Age: Early Triassic
Comment:Probably Griesbachian (early Early Triassic) in age. Correlative with the Lower part of the Ivishak Member.
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Claraia? sp. indet.
2 Ammonoids Indet. ammonite - possibly an ophiceratid