Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Probably Early Devonian
Kinds of fossils: Corals
Quadrangle or area: Circle Quad.
Shipment No.: A-81-2
Referred by: Foster, Helen L. , Weber, Florence R.
Report prepared by: Oliver, William A., Jr. , Dutro, J. Thomas, Jr.
Date: 02/21/1981

In consultation with J. T. Dutro, Jr.

Both lots of corals are clearly in the Middle Silurian to Middle Devonian range and both seem most likely to be Early Devonian for the reasons outlined below. Stretching the data even farther, 312 is probably a little older than 307. Excess rock is being submitted for a conodont check.

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80AFr307 (10314-SD) , Circle , Coral-bearing medium to dark-gray recrystallized limestone from sec. 23, T. 10 N., R. 14 E., lat. 65 deg. 41 min. 04 sec., long. 144 deg. 46 min. 45 sec., Circle C-2 quadrangle; submitted as Paleozoic, stratigraphic unit not known.
Crinoid stem disks (2-hole): Gasterocoma bicaula Johnson and Lane
Alveolites sp.
Favosites spp.
Pachyfavosites sp.
Striatopora sp. (in sense of Oliver, 1975, pl. 10)
Thamnopora sp.
Martinophyllum sp.
cf. Patridophyllum sp.
Ptenophyllid spp.
Spongonaria sp.
cf. Taimyrophyllum
Undetermined sp.
Bryozoans-undetermined
80AWr312 (10315-SD) , Circle , Coral-bearing fossiliferous medium- to dark-gray fine-grained recrystallized limestone from sec. 32, T. 12 N., R. 10 E., lat. 65 deg. 49 min. 18 sec., long. 145 deg. 43 min. 09 sec., Circle D-4 quad.; submitted as Paleozoic, stratigraphic unit unknown.
Amphipora sp.
Auloporoid? sp.
Striatopora sp. (in sense of Oliver, 1975, pl. 10)
Syringopora sp.
cf. Pseudoplasmopora sp.
cf. Spinolasma sp.
Undetermined sp.