Sample Detail of
Sample: Sample No. 20 of G.C. Martin, 1913 -- USGS No. Mesozoic loc. 8571
Locality: Field No. 20 of G.C. Martin, 1913
Description: G.C. Martin, 1913. Talkeetna Mountains, tributary of Boulder Creek from north, 3 miles above East Fork. Float from Chinitna formation. (description from Imlay, 1953, p. 65)
Location: Alaska Quadrangle: Anchorage D-3/D-4 border
Reference
Title: Callovan (Jurassic) ammonites from the United States and Alaska. Part 2. Alaska Peninsula and Cook Inlet Regions. USGS Proferssional Paper 249-B ,  1953
Report by: Ralph W. Imlay
Age: Callovian
Formation: Chinitna Formation
Comment:Description too vague and base map too gross to get approx. lat/long.

Shown as locality 2 on Figure 4.

Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Cadoceras glabrum Imlay, n. sp.