Alaska Paleontological Database

Sample Detail

Sample:	Sample No. 78ADG-143A
Locality:	Field No. 78ADG-143A
Description:	Alaska, Survey Pass quad., T. 29 N., R. 18 E., 67^o 55 min. 47 sec. N., 154^o 39 min. 02 sec. W.; orange-weathering limestone interbeds in brownish to gray weathering siltstone and shale. Collector: D. Grybeck, 1978.
Location:	Alaska Quadrangle: Survey Pass D-4 Township&Range: T29N R18E Lat.: 67^o55^'47 ^" Long.: 154^o39^'02 ^"

Reference

Title:	Report on Referred Fossils , 1979 (03/01)
	This report covers three collections, two from rocks west of Doc Creek and a third from the Plateau Mtn. area. The first two collections do not really contain diagnostic fossils, but, by comparing them with collections made nearby in 1978, they are likely Early Mississippian. The third collection also has no diagnostic fossils, but is lithologically similar to nearby rocks which have yielded Late Devonian (Frasnian) fossils.
Report by:	J. Thomas Dutro , Jr.
Referred by:	Donald Grybeck


Age:	Early Mississippian (Early Mississippian?)






Comment:	This collection contains only indeterminate echinoderm debris and small, unidentifiable rhynchonelloid brachiopods. Similar shells occur in rocks like these, and have yielded diagnostic Early Mississippian faunas, west of Doc Creek.