Alaska Paleontological Database

Reference Detail

Report on Referred Fossils

Stratigraphic range:

Jurassic and Cretaceous

Kinds of fossils:

Mollusks

Quadrangle or area:

, Alaska

Shipment No.:

A-77-22M-A

Referred by:

Detterman, Robert L.

Report prepared by:

Jones, David L. , Miller, John W.

Date:

05/26/1977

Continued from A-77-22M.

User Note module to be added

75A0-3 (Mesozoic loc. 6719) , Philip Smith Mts , Antigun Gorge, north side west and near west end, but not located on any map. Mainly black siltstone and shale - detail unknown.

Pectinid

75ABe49c (Mesozoic loc. 6720) , Philip Smith Mts , Ridge between Section and Accomplishment Creks, 4.4 miles S. 42 deg. W. of Elusive Lake, black siltstone with rusty limestone beds, position unknown.

75ARr39 (Mesozoic loc. 6721) , Philip Smith Mts , Near Itigaknit Mtn., 3.2 miles N. 15 deg. W. of peak 3260 Itigaknit Mtn., dark siltstone and sandstone near contact with Chandler Fm.

Ditrupa cornu Imlay

Indeterminable bivalve

75ARr199f (Mesozoic loc. 6722) , Philip Smith Mts , Atigun Gorge, 5.6 miles N. 68 deg. E. of outlet of Galbraith Lake; interbedded graywacke, siltstone and black shale near contact with Jurassic - float.

Posidonia?

75ARr199G (Mesozoic loc. 6723) , Philip Smith Mts , Same locality as 75ARr199F but in place. [Atigun Gorge, 5.6 miles N. 68 deg. E. of outlet of Galbraith Lake; interbedded graywacke, siltstone and black shale near contact with Jurassic.]

Possible Oxytoma sp.

75ADu4F (Mesozoic loc. 6724) , Philip Smith Mts , Ridge along tributary of Itkillik River, 5.6 miles S. 81 deg. W. of nroth end Galbraith Lake, calcareous shale and graywacke overlying Shublik Fm.

Indeterminable bivalve

75ADt94F (Mesozoic loc. 6725) , Philip Smith Mts , Ridge NE Itikmuluk River, 6.8 miles S. 84 deg. W. of north end Galbraith Lake. Graywacke-shale sequence - Lower Okpikruak Fm.

Indeterminable bivalve

75ADt97 (Mesozoic loc. 6726) , Philip Smith Mts , [Appears as 75ADt97 unit 1 on the attached transmittle sheet - NZ] Atigun Gorge, 3.6 miles N. 55 deg. E. of Galbraith Lake outlet, 85' below top of Okpikruak Fm.

Indeterminable bivalve

75ARr205A (Mesozoic loc. 6727) , Demarcation Point , Tributary of Niguanak River, 5.6 miles S. 10 deg. W. of junction with Niguanak R. dark shale and bentonite.

ammonite

bivalve

75ARr205K (Mesozoic loc. 6728) , Demarcation Point , Same locality as 75ARr205A [Tributary of Niguanak River, 5.6 miles S. 10 deg. W. of junction with Niguanak R. dark shale and bentonite.] - section repeated - organic shale - may be Seabee Fm.

Inoceramus sp.

75ABe105N (Mesozoic loc. 6729) , Philip Smith Mts , Low hills west of Lupine River, 12 miles N. 78 deg. E. of junction of Ribdon and Sagavanirktok Rivers, manganiferous siltstone and claystone, position unknown, Kongakut Fm.

Buchia cf. B. unschensis Pavlow

75ABe105S (Mesozoic loc. 6730) , Philip Smith Mts , Same locality as 75ABe105N [i.e. Low hills west of Lupine River, 12 miles N. 78 deg. E. of junction of Ribdon and Sagavanirktok Rivers, manganiferous siltstone and claystone, position unknown, Kongakut Fm] - south end of ridge.

Buchia sp. - possible B. okensis Pavlow

75ADt78 plus 210 feet (Mesozoic loc. 6731) , Philip Smith Mts , Same locality as 75ADt78 plus 120 feet. [i.e. Atigun Gorge, north side, 5.6 miles N. 65 deg. E. of outlet of Galbraith Lake, silty mudstone with pebbles.] 210 feet below top of formation