Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Middle Devonian
Kinds of fossils: Brachiopods and Mollusks
Quadrangle or area: McGrath A-5 Quad.
Shipment No.: A-66-1
Referred by: Hoare, Joseph M. , Condon, W. H.
Report prepared by: Dutro, J. Thomas, Jr.
Date: 02/18/1966

The following two collections from the McGrath A-5 quadrangle include the following:


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Brief statement of problem and remarks (from collector):
65AHr54 - collection from below and SE of a thick argillite section is a richly fossiliferous ls. and about 50' stratigraphically above a marble.

65AHr64 - collection from above(?) and N of the same thick argillite section is a richly fossiliferous ls. also and near contact with hornfels to north and appears to underlie the latter.

Similarity or difference in age here is needed to establish whether the lithologic units are 3 successive time units or that a fold exists repeating the fossiliferous ls.
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65AHr64 (USGS 7695-SD) , Mc Grath , Lat 62 deg. 4.7'N, long 155 deg. 9.4'W, McGrath A-5 quad., elev. 2500', SE 1/4 of SW 1/4 Sec. 16, T23N, R32W. (description from transmittal sheet submitted by J.M. Hoare for shipment No. A-66-4 -corals sent to Oliver)[Dutro E&R report gives following description for locality: "Alaska, McGrath A-5 quad., at 2600' elev. SE corner of SW1/4 sec. 16 of T. 23 N., R. 32 W., or lat 64 deg. 04.7' N., long. 155 deg. 09.4'W. Collectors: J.M. Hoare and W.H. Condon, 1965"]
thamnopora corals, indet.
"Favosites" limitaris Rominger
Aulacella sp.
Hypothyridina aff. H. cameroni Warren
Atrypa cf. A. arctica Warren
Spinatrypa cf. S. andersonensis Warren
65AHr54 (USGS 7693-SD) , Mc Grath , Lat 62 deg. 3.4'N, long 155 deg. 8.4'W, McGrath A-5 quad., elev. 1300', SE 1/4 of NE 1/4 Sec. 28, T23N, R32W. (description from transmittal sheet of J.M. Hoare submitted with Shipment No. A-66-4 - corals sent to Bill Oliver)[Dutro's E&R report provides following description: "Alaska, McGrath A-5 quad., at 1300' elev. SE corner of NE1/4 sec. 28 of NE1/4 sec. 28 of T. 23 N., R. 32 W.,; or lat. 62 deg. 03.4'N., long. 155 deg. 08.6'W. Collectors: J.M. Hoare and W.H. Condon, 1965"]
horn coral, undet.
Favosites sp. (massive)
thamnoporiod corals, indet.
Schizophoria cf. S. mcfarlanei (Meek)
Atrypa sp. (large)
Spinatrypa sp.
Large pelecypod, possibly Lyromytilus
euomphalid gastropod, undet.
high-spired gastropod, undet.
breviconic cephalopod, undet.