Sample Detail of
Sample: Sample No. 55AGz266a -- USGS No. Mesozoic loc. 25968
Locality: Field No. 55AGz266a
Description: Not given in Imlay E&R of 11/28/55, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Anchorage (D-1) 61o 57'50" N, 147o 21'12" W. Probably lowest fourth of lower shale and siltstone member Matanuska formation." (coordinates of 0.78-14.76 penciled in) [Jones, 1967, USGS Prof. Paper 547, p. 18 provides following description: A. Grantz, 1955. Anchorage D-1 quad., 300 ft north of Pass. Creek. Lat. 61o 57'50" N., long 147o 21'12" W. Unit C-1.]
Location: Alaska Quadrangle: Anchorage D-1
Lat.: 61o57'50 " Long.: 147o21'12 "
Reference
Title: Report on Referred Fossils ,  1955 (11/28)
Report by: Ralph W. Imlay
Referred by: Arthur Grantz
Age: Late Cretaceous
Formation: Matanuska Formation
Comment:The fossils from the Matanuska formation are mostly Inocerami belonging to species that have been recorded previously from many localities and with which you are familiar.

The common species from the lower third of the lower shale and siltstone member is, also, Inoceramus uwajimensis, but I. cf. I. iburiensis Nagao and Matsumoto occurs at three localities. The latter has been obtained previously in about the same stratigraphic position in the lower part of the Matanuska formation.

Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Inoceramus uwajimensis Yehara
2 Bivalves Inoceramus cf. I. iburiensis Nagao and Matsumoto

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: Turonian
Formation: Matanuska Formation
Comment:[Note by R.B. Blodgett: Location shown on Pl. 10, which indicates it is Turonian in age] On p. 11, Jones states: "This age assignment [Turonian] is based mainly on the presence of Inoceramus cf. I. cuvierii, the most common mollusk in most outcrops of unit C-1"
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Inoceramus cf. I. curvierii