Sample Detail of
Sample: Sample No. none given #11 -- USGS No. University of Alaska Museum loc. A-941
Locality: Field No. none given #11
Description: Section D, Yukon Territory, Long. 140°59'56" W., Lat. 65'05.2' N. Sectlon measured in a small cliff composed of thinly bedded dark gray, fetid, micrite. Cliff located on the south side of Harrington Creek, approximately .05 mile east of the Alaska-Yukon boundary, at point where creek makes a sharp bend to the north upstream. Total height of section is 14 feet. ............. UA Mus. loc. A-941, basal 4 feet of Section D. (description from Blodgett, 1978, M.S. thesis; [Holmer et al., 2020 p. 144 provides the following description: The University of Alaska (UA) Museum locality A941 (Fig. 1) is from the base of Section D of Blodgett (1978). The section is situated in the Yukon Territory (latitude 65º05.2´N, longitude 140º59.56´W) and was measured in a small cliff composed of thinly bedded dark grey, petroliferous, micritic limestone. The cliff is located on the south side of Hard Luck Creek (also known as Harrington Creek), in its upper reaches approximately 0.805 km (0.5 mile) east of the Alaska–Yukon boundary, at the point where the creek makes a sharp bend to the north upstream. The total height of the section is 4.3 m (14 feet). The UA Museum locality A­941 represents the basal 1.22 m (4 feet) of section D. Conodonts from this locality include the age­ diagnostic Polygnathus inversus Klapper & Johnson of middle Emsian age (Blodgett 1978).
Location: Alaska No Data
Lat.: 65o05.2 ' Long.: 140o59'56 "
Reference
Title: Biostratigraphy of the Ogilvie Formation and limestone and shale member of the McCann Hill Chert (Devonian), east-central Alaska and adjacent Yukon Territory ,  1978
This is my M.S. thesis at the University of Alaska Fairbanks, completed in 1978
Report by: Robert B. Blodgett
Age: Emsian (late Emsian)
Formation: Ogilvie Formation
Comment:Collection deposited at the University of Alaska Fairbanks Museum in Fairbanks, Alaska. See Fig. 5 on p. 34 for Section D. Linguopugnoides glaberrhvnchus was recognized and described from the 0gilvie Formation ln the Yukon Territory by Perry et al.(1974, p. 1074), where it is associated with a brachiopod fauna of Emsian age. Distribution - Elythyna klngi is known from the late Emsian Disappointment Bay Formation, Lowther Island, Canadian Arctic Islands (Johnson, 1975) where it associated with Polygnathus inversus (J. G.Johnson, 1978, personal communication).
Occurrence(s)
No. Group Name Qty Notes
1 Brachiopods Torynelasma n. sp.
2 Brachiopods Orbiculoidea sp.
3 Brachiopods Phragmostrophia cf. P. merriami Harper, Johnson, and Boucot, 1967 three pedicle valves, two brachial valves
4 Brachiopods "Chonetes" sp.A 10 specimens
5 Brachiopods Athryrhynchus susanae Johnson, 1973 one fragmented articulated specimen
6 Brachiopods Linguopugnoides glaberrhynchus Perry, Klapper, and Lenz, 1974 one articulate specimen
7 Brachiopods Elythyna cf. E. kingi Johnson, 1975 6 articulate specimens, 8 pedicle valves, 5 brachial valves
8 Brachiopods Bifida sp. 1 silicified brachial valve
9 Bivalves Actinopteria sp. solitary right valve
10 Trilobites Lacunoporaspis n. sp. numerous specimens
11 Conodonts Polygnathus inversus Klapper & Johnson
12 Tentaculites Nowakia sp. numerous specimens embedded in limestone matrix

Title: The Early Devonian (Emsian) acrotretid microbrachiopod Opsiconidion minor Popov, 1981, from the Alaska/Yukon Territory border and Novaya Zemlya ,  2020
Abstract. New records of the poorly known acrotretid (Biernatidae) microbrachiopod Opsiconidion minor Popov are described from middle Emsian strata of the Ogilvie Formation in east­-central Alaska and the adjacent Yukon Territory, Canada, and compared with new better ­preserved topotypes from the late Early Devonian (Emsian) of Novaya Zemlya, Russia. In Alaska O. minor occurs together with fragmentary material of Lingulipora sp. and an indeterminate discinid. The only other previous record of O. minor, outside the type area, comes from the Early to ?Middle Devonian (Pragian to ?Givetian) of Australia (Victoria and NSW). Opsiconidion Ludvigsen is a stratigraphically extremely long­-ranging and cosmopolitan acrotretid, which exhibits a remarkable conservatism; the morphology of the ventral valve remains essentially unchanged from the earliest Ordovician (Darriwilian) records to the Devonian.
Report by: Lars E. Holmer , Robert B. Blodgett , Yue Liang , Zhifei Zhang
Age: Emsian (middle Emsian)
Formation: Ogilvie Formation
Occurrence(s)
No. Group Name Qty Notes
1 Brachiopods Opsiconidion minor Popov, 1981 same as Torynelasma n. sp. from Blodgett, 1978, M.S. thesis; specimens from this locality illustrated on Figs. 2A-C, 2J-K and Figs. 3C-D