Fig. 9 in Early Ordovician Conodonts from Far Western New South Wales, Australia

Fig. 9. Schematic diagram to show possible evolutionary relationships of Cooperignathus. A, Acodus sp. cf. emanuelensis,?M element, AMF120702, TAB1/39.5, anterior view. B, Protoprioniodus yapu, Pb element, AMF120705, outer lateral view; C, P. yapu, Pa element, AMF120706, outer lateral view. D, C. nyinti, Pb element, AMF120703, outer lateral view; E, C. nyinti, Pa element, AMF120704, outer lateral view. F, C. aranda, Pb element AMF120335, TAB1/39.5, basal view; G, C. aranda, Pa element, AMF120334, C1611, upper view. B–E, from EC-5, Horn Valley Siltstone, Ellery Creek, Amadeus Basin. Scale bar 100µm. Bs, basal surface; Bc, basal cavity; Co, ledge-like costa defining the margin of the basal surface; Ou, outer lateral process.