Sample Detail of
Sample: Sample No. 58ATr1002 -- USGS No. 23333-PC
Locality: Field No. 58ATr1002
Description: Point Hope A-2 quadrangle, Alaska coord. 10.3, 7.5; About 100 yds. North of Crowbill Survey Point. Rubble of calcarenite, possibly from near top of Kogruk equivalent. Collector: I.L. Tailleur, 1958.
Location: Alaska Quadrangle: Point Hope A-2
Reference
Title: Report on Referred Fossils ,  1968 (06/04)
Report by: J. Thomas Dutro , Jr.
Referred by: Irv L. Tailleur
Age: Meramecian (Late Mississippian (Meramecian))
Comment:This silicified material was dissolved in hydrochloric acid and the residue produced a diverse assemblage of fossils; the dominant elements are spiriferoid brachiopods and fenestrate bryozoans. The very large number of spiriferoid valves are, for the most part, crudely silicified and badly worn. They could all represent a single species, near S. haydenianus Girty from the Upper Mississippian of southeast Idaho. A few specimens attain the shape and size of S. brazierianus Girty. Also present are a few valves that may belong to Anthracospirifer. The entire assemblage is almost certainly of Late Mississippian (Meramec) age.

Note: Collection 58ATr1001, from beds possibly assigned to the Tupik Fm., was not found in with the other collections in this shipment. It can be considered lost. 58ATr1003 and 1004 are entirely coralline and were sent to A.K. Armstrong.

Occurrence(s)
No. Group Name Qty Notes
1 Echinoderms echinoderm debris, indet.
2 Crinoids platycrinitid columnals, indet.
3 Blastoids Pentremites sp.
4 Bryozoans fenestrate and ramose bryozoans, undet.
5 Rugose Corals horn corals, undet. (to Armstrong)
6 Brachiopods orthotetid, indet.
7 Brachiopods rhynchonelloid indet. (possbly Leiorhynchoidea)
8 Brachiopods dictyoclostid, indet.
9 Brachiopods Spirifer aff. S. haydenianus Girty (abundant)
10 Brachiopods Spirifer aff. S. brazerianus Girty
11 Brachiopods Anthracospirifer? sp.
12 Brachiopods Brachythyris? sp.
13 Brachiopods Composita sp.
14 Brachiopods Cleiothyridina sp.
15 Brachiopods Eumetria sp.
16 Brachiopods dielasmid, indet.
17 Snails Rhineoderma sp.