Alaska Paleontological Database

Reference Detail

Report on Referred Fossils

Stratigraphic range:

Mississippian-Triassic

Kinds of fossils:

Invertebrates

Quadrangle or area:

Delong Mtns. Quad. (1:250,000), Northern

Shipment No.:

0-77-3

Referred by:

Cleveland, G.

Report prepared by:

Dutro, J. Thomas, Jr.

Date:

01/06/1977

This report covers 11 collections from the Delong Mountains Quad. of which 4 are from the Kogruk Limestone, 5 are from a Mississippian shale-chert-sandstone sequence and 2 are from Triassic cherts.

All collections from the Kogruk are float and three of these consist only of indeterminate crinoid columnals. The fourth is a lithostrotionoid coral, typical of this late Mississippian formation in the western Brooks Range.

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Cleveland 30107 , De Long Mts , Wulik River tributary, float in creek bed.

large crinoid columnals

Cleveland 30461 , De Long Mts , Tributary to west fork of Wulik River, float in creek bed.

large crinoid columnals

Cleveland F-1 , De Long Mts , Float in creek bed, location unknown.

large crinoid columnals

Cleveland 30435 , De Long Mts , Ikalukrok tributary, float in creek bed.

Lithostrotion (Siphonodendron) sinuosum (Kelly)

Cleveland 30511-1, 2 , De Long Mts , Tributary to west fork of Wulik River, float in a creek bed.

large crinoid columnals

Cleveland F-2 , De Long Mts , Ikalukrok tributary, float on a hillside.

Spirifer cf. S. gregeri Weller

Cleveland F-3, F-4 , De Long Mts , Ikalukrok tributary, talus on hillside.

Cleveland F-5, F-6 , De Long Mts , Ikalukrok tributary, float in creek bed.

Monotis sp.