Sample Detail of
Sample: Sample No. 48AMr142 -- USGS No. Mesozoic loc. 21338
Locality: Field No. 48AMr142
Description: [Shown as locality 248 on Detterman and Hartsock, 1966 - Note by R.B. Blodgett: digitization of this point gives approx. lat. 59o 53'31" N., 153o 04'04" W.]][Entry in USGS Mesozoic Fossil Locality register (Washington, D.C.) provides following description: "Orig. no. 48AMr142. Upper Jurassic - Chinitna Fm. Same geographical location as no. 21242. Stream described under 21336 (orig. no. 48AMr140) at point 1.36 miles N. 87o E of Horn Htn. Reddish-brown weathering sandstone probably near middle of lower unit of Chinitna formation. Sept. 12, 1948."]; [D.J. Miller, 1948. North side of Chinitna Bay. East branch of large stream east of Horn Mountain at point 1.36 miles N. 87° E. of Horn Mountain, Chinitna formation, probably near middle of middle third. (description from Imlay, 1953, p. 66)]
Location: Alaska Quadrangle: Iliamna D-1
Lat.: 59o53'31 " Long.: 153o04'04 "
Reference
Title: Geology of the Iniskin-Tuxedni Region, Alaska [last half of single issue publication] ,  1966
Report by: Robert L. Detterman , John K. Hartsock
Age: Callovian (early Callovian)
Formation: Chinitna Formation - Tonnie Siltstone Member (Tonnie Siltstone Member)
Comment:Geographic location: Chinitna Bay-Horn Creek
Map reference (pl. 3): 248
Stratigraphic position below top of formation (ft): 650-750
all above data from Table 10, p. 46
Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Cadoceras comma Imlay

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:Shown as locality 14 on Figure 6.

Digitization of the locality on Figure 6 gives coordinates of: 59 53'30" N., 153 04'00" W.

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