Sample Detail of
Sample: Sample No. No Data -- USGS No. Mesozoic loc. 26561
Locality: Field No. No Data
Description: Anuk Creek, bend about 5 miles above mouth. Lat. 69o 20' N., long. 153o 47' W. Seabee formation, 240-250 feet below top of the unnamed lower unit. W.P. Brosge, 1949. (description from Cobban and Gryc, 1961, p. 179)
Location: Alaska Quadrangle: Ikpikpuk River B-2
Lat.: 69o20' " Long.: 153o47' "
Reference
Title: Ammonites from the Seabee Formation (Cretaceous) of northern Alaska ,  1961
ABSTRACT

The Seabee formation, 400-1,800 feet thick, contains two ammonite faunas that are assigned to the Turonian stage of the Upper Cretaceous. These ammonites reveal a mixing of elements from the Atlantic and Pacific faunal realms. The species of Scaphites and Watinoceras are Atlantic types whereas the species of Otoscaphites, Borissiakoceras, and Proplacenticeras seem to have a Pacific source. A connection of the Western Interior Seaway with the Pacific Ocean via the Arctic Ocean along northern Alaska seems likely. New species described are Scaphites subdelicatulus, Otoscaphites seabeensis, Borissiakoceras inconstans, and B. ashurkoffae.
Report by: W. A. Cobban , George Gryc
Age: Turonian (early Turonian)
Formation: Seabee Formation (unnamed lower unit of the Seabee Formation)
Comment:The two ammonite faunas from the unnamed lower unit of the Seabee formation are best assigned an early Turonian age. In terms of the standard reference sequence for the Western Interior of the United States the lower unit of the Seabee formation seems to correlate with the upper part of the Greenhorn limestone and to represent the faunal zones of Sciponoceras gracile and Inoceramus labiatus (Cobban and Reeside, 1952, p. 1017, 1018).
Occurrence(s)
No. Group Name Qty Notes
1 Ammonoids Otoscaphites seabeensis n. sp.
2 Ammonoids Borissiakoceras ashurkoffae n. sp.