of
Sample: Sample No. 74AR43B -- USGS No. USGS 9504-SD
Locality: Field No. 74AR43B
Description: 2 mi. N. 45o E. from Shellabarger Pass; 50 ft. below top of sandstone unit that appears to be overturned. Collectors: B. Reed, D. Jones, D. Richter, 1974.
Location: Alaska Quadrangle: Talkeetna C-6
Township&Range: T28N R19W Section: SEC. 1
Reference
Title: Report on Referred Fossils ,  1975 (05/01)
This is a final report on the corals of this lot. Preliminary identifications were included in Tom Dutro's report of 3/3/75.
Report by: William A. Oliver , Jr.
Referred by: Bruce Reed
Age: Frasnian
Comment:I would not be able to identify this Macgeea were it not for the similarity of it to specimen in 43 A. The collection is almost certainly Frasnian.
Occurrence(s)
No. Group Name Qty Notes
1 Tabulate Corals Thamnopora sp. (one fragment)
2 Rugose Corals Macgeea? sp. (one fragment)

Title: Report on Referred Fossils ,  1975 (03/03)
(In consult. with W.A. Oliver) This is a preliminary report on 5 collections from the "red bed" section (Section 43) 2 miles northeast of Shellabarger Pass. Brachiopods and corals, present in all except the upper two collections (74AR43 and 43C), are similar and all suggest a Late Devonian (Frasnian) age. Nothing about the sequence of faunas seems diagnostic for determining superposition of beds. Phyical criteria will have to be relied on for this purpose.
The corals will be studied by Oliver after his return from Africa this spring. As far as we can determine, these faunas all represent the Macgeea Zone (Frasnian).
Report by: J. Thomas Dutro , Jr.
Referred by: Bruce Reed
Age: Frasnian
Comment:This assemblage, charaterized by large brachiopods, is clearly facies controlled. however, it is like early Frasnian faunas of the Hay River Shale in northwestern Canada and similar assemblages have been found in Frasnian rocks in the central Brooks Range. Again, the probable presence of Macgeea relates this to other collections in this sequence.
Occurrence(s)
No. Group Name Qty Notes
1 Tabulate Corals Thamnopora sp.
2 Rugose Corals Macgeea? sp.
3 Brachiopods Schizophoria cf. S. mcfarlanei (Meek)
4 Brachiopods Productella sp.
5 Brachiopods Allanaria sp.
6 Brachiopods Atrypa sp. (large) abundant
7 Brachiopods Spinatrypa sp.
Strat. Column