Sample Detail of
Sample: Sample No. 49AHa66 -- USGS No. Mesozoic loc. 21780
Locality: Field No. 49AHa66
Description: Chinitna formation?, from Miller's point B 80 in canyon east of Horn Mountain, north of Chinitna Bay. (description from Imlay E&R report of 1/16/50)[Grantz transmittal sheet of Nov. 23, 1949 provides following description: "Exceptionally coarse-ribbed Inoceramus from Miller's point B 80, in canyon east of Horn Mtn. Any age significance to the coarse ribbing? Page 66, September 12, 1949."][locality not listed in text or shown on Pl. 3 of Detterman and Hartsock, 1966]
Location: Alaska Quadrangle: Iliamna D-1
Reference
Title: Report on Referred Fossils ,  1950 (01/16)
Title: Report on Jurassic fossils from west side of Cook Inlet, southwestern Alaska, submitted by John A. Hartsock and Don Miller, December 15, 1949 (AF-49-10) Examination has been made of the collections of Jurassic fossils made in 1949 along the west side of Cook Inlet by Miller, Hartsock, and Grantz. There is no question concerning the age or stratigraphic position of most of the collections but a few require comment.

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None of the other lots present any age problems. I hope to complete describing the Callovian ammonites early this spring and at that time will sent you a summary of conclusions.
Report by: Ralph W. Imlay
Referred by: John K. Hartsock , Don J. Miller , Arthur Grantz
Age: Jurassic (Jurassic, no further definitive age is given in E&R report)
Formation: Chinitna Formation (Chinitna Formation?)
Comment:Chinitna formation
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Inoceramus sp.