Sample Detail of
Sample: Sample No. 77-ADt-169 -- USGS No. Mesozoic loc. M6926
Locality: Field No. 77-ADt-169
Description: Chignik (D-1) Quadrangle. Latitude 56o 50 min. 29 sec. N; Longitude 158o 12 min. 50 sec. W. Section 5, T. 39 S., R. 56 W., 3.7 miles S 40o W of Vent Mountain. Naknek Formation, dark siltstone with thin sandstone interbeds.
Location: Alaska Quadrangle: Chignik D-1
Township&Range: T39S R56W Section: Sec.5
Lat.: 56o50'29 " Long.: 158o12'50 "
Reference
Title: Report on Referred Fossils ,  1978 (04/27)
Continued from A-78-18M, Part A.

This report completes the Naknek and Stainiukovich collections. The report on fossils collected from the Hoodoo and Chignik Formations will follow soon.
Report by: David L. Jones , John W. Miller
Referred by: Robert L. Detterman
Age: Kimmeridgian
Formation: Naknek Formation
Comment:Age: Late Jurassic (Kimmeridgian)
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Buchia concentrica (Sowerby)
2 Bivalves Buchia rugosa (Fischer)