Sample Detail of
Sample: Sample No. 49AEC135 -- USGS No. Mesozoic loc. 22123
Locality: Field No. 49AEC135
Description: None given on E&R form. [Transmittal form of Eckhart cites it as "Gypsiferous deposit near Sheep Mountain Inn on Glen Allen Highway. Approximately 112 miles east of Anchorage, Alaska." "Salt and pepper sandstone." "NW1/4, of NE1/4, 602." "Sheep Mountain" Collector: R.A. Eckhart, p. 102 of 1949 notebook, date 9/10/49 [Note by RBB: this locality occurs on the current Anchorage D-2 quadrangle map] [Jones, 1967, p. 17 gives following description: R.A. Eckhart, 1949. Anchorage D-2 quad., 3,100 ft north of Glenn Highway. Lat. 61o 48'50" N., long. 147o 31'45" W. Unit B]
Location: Alaska Quadrangle: Anchorage D-2
Lat.: 61o48'50 " Long.: 147o31'45 "
Reference
Title: Report on Referred Fossils ,  1950 (03/20)
Report by: Ralph W. Imlay
Referred by: R. A. Eckhart
Age: Late Cretaceous (early Late Cretaceous)
Formation: Matanuska Formation
Comment:Lot 49 AEC - 135 from the Matanuska formation contains a species of Inoceramus that is similar to species in the Carlile shale of the Western Interior and is, therefore, probably of early Upper Cretaceous age.
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves a species of Inoceramus similar to a species in the Carlile shale of the Western Interior

Title: Cretaceous ammonites from the lower part of the Matanuska Formation, southern Alaska, with a stratigraphic summary by Arthur Grantz ,  1967
Report by: David L. Jones
Age: Cenomanian
Formation: Matanuska Formation
Comment:[Note by R.B. Blodgett: Location shown on Pl. 10, which indicates it is Cenomanian in age]
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Inoceramus n. sp. "B"