Sample Detail of
Sample: Sample No. 83ADn25E -- USGS No. 10745-SD
Locality: Field No. 83ADn25E
Description: Alaska, Seward Peninsula, Solomon D-1 quadrangle; sec. 3, T. 8 S., R. 18 W.; lat. 64o 50' N., long.162o 18' W.; small saddle just west of hill 1235; elev. about 1150 ft; fine-grained black dolomite. Collector: J. Dumoulin, 1983. Collection retained.
Location: Alaska Quadrangle: Solomon D-1
Township&Range: T8S R18W Section: Sec.3
Lat.: 64o50' " Long.: 162o18' "
Reference
Title: Report on Referred Fossils ,  1983 (10/03)
Report by: J. Thomas Dutro , Jr.
Referred by: Julie A. Dumoulin
Age: Frasnian (middle Frasnian)
Comment:The single identifiable brachiopod from this collection, is fortunately, biostratigraphically significant. The partial brachial valve belongs to the morphologically distinct genus CALVINARIA, and the ribbing pattern places it in the C. VARIABILIS (Whiteaves) group, as described by McLaren (1962) from western Canada. This species complex is found only in the Frasnian and is limited to the middle part of the stage in western North America. This fully supports Bill Oliver's interpretation of the coral fauna from this collection (see report dated 9/14/83)

REFERENCE

McLaren, D.J., 1962, Middle and Early Upper Devonian Rhynchonelloid Brachiopods from Western Canada: Geol. Survey Canada Bull. 86, 122 p.

Occurrence(s)
No. Group Name Qty Notes
1 Brachiopods Calvinaria variabilis (Whiteaves) group represented by partial brachial valve