Sample Detail of
Sample: Sample No. 91ANs23C -- USGS No. DR 1351
Locality: Field No. 91ANs23C
Description: Howard Pass B-5. Lat. 68o 26'35" N., Long. 158o 37'20" W. Chert south of samples 91ANs23A and 23B. The poor preservationof all forms makes it impossible to assign an accurate age, but the absence of nassellarians and presence of abundant entactinids suggest a possible pre-Mesozoic (Paleozoic) age. (description from Dover et al., 2004, p. 60 (Table 2))
Location: Alaska Quadrangle: Howard Pass B-5
Lat.: 68o26'35 " Long.: 158o37'20 "
Reference
Title: Geologic and fossil locality maps of the west-central part of the Howard Pass Quadangle and part of the adjacent Misheguk Mountains Quadrangle, western Brooks Range, Alaska ,  2004
Report by: Jim Dover , Irv L. Tailleur , Julie A. Dumoulin
Age: Paleozoic (?Paleozoic)
Formation: Imnaitchiak Chert
Comment:Age: ?Paleozoic

Shown as locality 83 on Sheet 2; map unit: JlPii

Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian Radiolarians recrystallized, poorly preserved, all lacking preserved external meshwork or visible pore structure radiolarians identified by C.D. Blome and K.M. Reed
2 Radiolarian Several large, broken entactiniids preserved that are similar in geometry and spine structure to Parentactinia itsukaichiensis Sashida and Tonishi
3 Radiolarian ?Pseudoalbaillella sp.