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FIGURE 5Conodonts from upper shale member of Bakken Formation in Antelope 11-15-29-1W4 well (Locality 1) and Antelope 10-2-29-1W4 well. Specimens illustrated in 10, 11, and 13 from latter well. Specimens illustrated in 16-18, 22-41 from bedding plane surfaces of core samples illustrated in Figure 3.1 and 3.3. All depths from Kelly Bushing at surface when known. All views are lateral views unless indicated otherwise. 1, 2, 16, 22, Ozarkodinid M elements. 1, GSC 123750, x50, depth 910 m. 2, GSC 123751, x50, depth 910.6 m. 16, 22, GSC 123765, 123771, both x24. 3, 4, 17, 23, Ozarkodinid S0 elements. 3, 4, GSC 123752, 123753, both x50, depth 910 m. 17, Caudal view, GSC 123766, x24. 23, Rostral view, GSC 123772, x24. 58, 13, 15, 2426, 39, Ozarkodinid P2 elements. 5, Element with narrow denticles, GSC 123754, x50, depth 910.6 m. 6, Element with narrow denticles, GSC 123755, x50, depth 910 m. 7, Element with broad denticles, GSC 123756, x50, depth 910.6 m. 8, Element with broad denticles, GSC 123757, 910 m. 13, GSC 123762, x35, depth 881 m. 15, GSC 123764, x35, depth 910 m. 24, Specimen mostly represented by external mold resembling P2 element in apparatus reconstruction of Polygnathus communis Branson and Mehl, 1934b of Chauff (1981) and Chauff and Nichols (1995), GSC 123773, x24. 25, 39, GSC 123774, 123788, both x24. 26, Specimen with narrow denticles, GSC 123775, x24. 9, 11, 31, 40, Bispathodus stabilis (Branson and Mehl, 1934a), P1 elements. 9, GSC 123758, x35, depth 910.6 m. 11, GSC 123760, x50, depth 881 m. 31, 40, GSC 123780, 123789, both x24. 10, 18, Mehlina sp., P1 elements. 10, GSC 123759, x35, depth 881 m. 18, GSC 123767, x24. 12, 19, 3538, Ozarkodinid S3 and S4 elements. 12, 19, GSC 123761, 123768, both x35, depth 910 m. 35, 37, S4 elements, GSC 123784, 123786, both x24. 36, 38, S3 elements, GSC 123785, 123787, both x24. 14, 21, 27, 28, Polygnathus communis, P1 elements. 14, Free blade of platform, GSC 123763, x50, depth 910.6 m. 21, Oral view, GSC 123770, depth 910.6 m. 27, Oblique aboral view, GSC 123776, x24. 28, Oral view, GSC 123777, x24. 20, 41, Pseudopolygnathus sp., Pa elements. 20, Oral view, dorsal fragment of platform, GSC 123769, x50, depth 910 m. 41, GSC 123790, x24. 29, 30, Ozarkodinid S1 and S2 elements. 29, S1 element, GSC 123778, x24. 30, S2 element, GSC 123779, x24. 32, Bispathodus aculeatus (Branson and Mehl, 1934a), P1 element, GSC 123781, x24. 33, 34, Prioniodinid(?) ramiform elements, GSC 123782, 123783, both x24
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