FIGURE 11. P1 in Telychian (Llandovery, Silurian) conodonts from the LaPorte City Formation of eastern Iowa, USA (East-Central Iowa Basin) and their implications for global Telychian conodont biostratigraphic correlation

FIGURE 11. P1 elements of Wurmiella? polinclinata estonica and Wurmiella? polinclinata polinclinata. 1-11 are classified as W.? polinclinata polinclinata. 12 and 14 show some characteristics of each subspecies, but compare most closely to W.? polinclinata polinclinata. 13, 15-17 are classified as W.? polinclinata estonica. All specimens in lateral view. 1, GC 121.92–121.88 m, SUI 142321; 2, GC 128.85–129.11 m, SUI 142322; 3-5, GC 130.20–130.48 m, SUI 142323 (3), 142324 (4), and 142325 (5); 6, GC 130.79–131.09 m, SUI 142326; 7-11, GC 131.95–132.23 m, SUI 142327 (7), 142328 (8), 142329 (9), 142330 (10), and 142331 (11); 12-14, GC 134.06–134.31 m, SUI 142332 (12), 142333 (13), and 142334 (14); and 15-17, GC 135.65–136.10 m, SUI 142335 (15), 142336 (16), and 142337 (17).