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Figure 18 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 18. Protopanderodus calceatus Bagnoli & Stouge, 1997. A–E, M1 element; A, NIGP 153003, Nj297, posterior view (IY150-016); B, NIGP 153004, Nj295, posterior view (IY149-012); C, NIGP 153005, AFT-X-K13/13, posterior view (IY168-007); D, NIGP 153006, Nj296, posterior view (IY149-029); E, NIGP 153007, AFT-X-K13/13, anterior view (IY168-008). F, M2 element, NIGP 153008, AFT- X-K13/13, posterior view (IY168-006). G–J, Sa element; G–I, NIGP 153009, Nj297, G, H, lateral views (IY162-022, IY162-018), I, upper view showing cross section of cusp (IY162-021); J, NIGP 153010, AFT-X-K13/13, lateral view (IY168-013). K–L, Sb element, NIGP 153011, Nj294, K, inner lateral view (IY147-020), L, outer lateral view (IY147-021). M–P, Sc element; M–N, NIGP 153012, Nj294, M, inner lateral view (IY147-022), N, upper view showing cross section of cusp (IY147-023)… (caption continued on facing page)

Figure 7 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 7. Costiconus ethingtoni (Fåhraeus, 1966). A–E, Sa element; A–C, NIGP 152874, Nj379, A–B, lateral views (IY154-010, IY154- 011), C, basal view (IY154-009); D–E, NIGP 152875, 14/45, lateral views (IY155-032, IY155-033). F–G, Sb element, NIGP 152876, 13/40, F, basal view (IY155-022), G, inner lateral view (IY155-021). H–L, Sc element; H, NIGP 152877, Nj388, inner lateral view (IY162- 010); I–J, NIGP 152878, Nj378, I, inner lateral view (IY160-016), J, outer lateral view (IY160-015); K–L, NIGP 152879, Nj297, K, outer lateral view (IY159-008), L, inner lateral view (IY159-009). M–T, Sd element; M–O, NIGP 152880, Nj298, M, upper view (IY151-001), N, outer lateral view (IY151-002), O, inner lateral view (IY151-003); P–S, NIGP 152881, Nj379, P–Q, lateral views (IY154-016, IY154- 014), R, basal view (IY154-015), S, posterior view (IY154-017); T, NIGP 152882, 13/45, posterior view (IY155-034). U, Pa element, NIGP 152883, Nj388, inner lateral view (IY162-013). Scale bars 100 µm.

Figure 14. A–B in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 14. A–B, Histiodella holodentata Ethington & Clark, 1982. Pa element, A, NIGP 152962, Nj296, outer lateral view (IY149-023); B, NIGP 152963, Nj296, inner lateral view (IY149-024). C–F, Histiodella kristinae Stouge, 1984. Pa element; C, NIGP 152964, AFT-X- K13/13, outer lateral view (IY163-001); D, NIGP 152965, AFT-X-K13/13, inner lateral view (IY163-005); E–F, NIGP 152966, AFT-X- K13/13, E, outer lateral view (IY163-003), F, outer lateral view, close up showing fine surface striation (IY163-004). G–L, Panderodus gracilis (Branson & Mehl, 1933). G–I, tortiform element, NIGP 152967, Nj379, G, outer lateral view (IY160-024), H, outer lateral view showing furrow and fine striation on the base (IY160-025), I, inner lateral view (IY160-026). J–L, falciform element, NIGP 152968, Nj379, J, inner lateral view (IY160-027), K, outer lateral view (IY160-028), L, basal view (IY160-029). Scale bars 100 µm.

Figure 10. Drepanodus arcuatus Pander, 1856. A–C, M in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 10. Drepanodus arcuatus Pander, 1856. A–C, M element; A, NIGP 152907, AFT-X-K13/13, posterior view (IY166-021); B, NIGP 152908, AFT-X-K13/13, anterior view (IY166-019); C, NIGP 152909, Nj297, posterior view (IY150-034). D, Sa element, NIGP 152910, Nj375, lateral view (IY162-024). E–G, Sb element; E, NIGP 152911, Nj297, inner view (IY150-036); F, NIGP 152912, Nj294, outer lateral view (IY147-035); G, NIGP 152913, Nj297, inner lateral view (IY150-035). H–I, Sc element; H, NIGP 152914, Nj297, inner lateral view (IY150-031); I, NIGP 152915, Nj406, outer lateral view (IY161-004). J–K, Pa element; J, NIGP 152916, Nj297, outer lateral view (IY150-033); K, NIGP 152917, Nj294, outer lateral view (IY147-036). L–N, Pb element; L, NIGP 152918, Nj295, inner lateral view (IY149-010); M, NIGP 152919, AFT-X-K13/13, outer lateral view (IY166-023); N, NIGP 152920, AFT-X-K13/13, inner lateral view (IY166-018). Scale bars 100 µm.

Figure 17. A–K in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 17. A–K, Polonodus newfoundlandensis Stouge, 1984. A–D, Pa (polyplacognathiform) element; A, NIGP 152992, AFT-X-K13/13, sinistral, upper view (IY165-026); B, NIGP 152993, AFT-X-K13/13, dextral, upper view (IY165-027); C, NIGP 152994, AFT-X-K13/13, sinistral, upper view (IY165-031); D, NIGP 152995, AFT-X-K13/13, dextral, upper view (IY165-025). E–K, dextral Pb (ambalodiform) element; E, NIGP 152996, AFT-X-K13/13, upper view (IY165-032); F–G, NIGP 152997, AFT-X-K13/13, F, upper view (IY165-029), G, upper view, close up showing reticulate surface structure (IY165-030); H–I, NIGP 152998, AFT-X-K13/13, H, upper view (IY165- 020), I, lateral view (IY165-022); J–K, NIGP 152999, AFT-X-K13/13, J, upper view (IY165-021), K, lateral view (IY165-023). L–M, Polonodus clivosus (Viira, 1974). Pa (polyplacognathiform) element, NIGP 153000, AFT-X-K13/13, L, upper view (IY163-018), M, outer lateral view (IY163-017). N–O, Gen. et sp. indet. Sd element, NIGP 153001, AFT-X-K13/13, N, basal view (IY163-014), O, inner lateral view (IY163-014). P–Q, Polonodus sp. A.?Pb element, NIGP 153002, AFT-X-K13/13, P, upper view (IY163-008), Q, inner lateral view (IY163-009). Scale bars 100 µm, unless otherwise indicated.

Figure 13. A–K in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 13. A–K, Dzikodus?tablepointensis (Stouge, 1984). A–B, Pb element; A, NIGP 152952, Nj297, upper view (IY150-001); B, NIGP 152953, Nj297, upper view (IY150-002). C–G, Sa element; C, NIGP 152954, Nj297, posterior view (IY150-003); D–E, NIGP 152955, Nj297, D, lateral view (IY150-008), E, anterior view (IY150-010); F–G, NIGP 152956, Nj297, F, lateral view (IY159-006), G, posterior view (IY159-007). H–I, Sb element, NIGP 152957, Nj297, H, outer lateral view (IY150-006), I, inner lateral view (IY150-007). J–K, Sd element, NIGP 152958, Nj297, J, postero-outer lateral view (IY159-005), K, posterior view (IY159-004). L–N, Polonodus sp. B. L, P element, NIGP 152959, Nj291, upper view (IY158-002); M, P element, NIGP 152960, Nj291, upper view (IY158-001); N, Sc element, NIGP 152961, Nj291, inner lateral view (IY158-003). Scale bars 100 µm.

Figure 9. A–C in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 9. A–C, Dapsilodus viruensis (Fåhraeus, 1966). A, Sc element, NIGP 152896, Nj375, outer lateral view (IY159-024). B–C, Sa element; B, NIGP 152897, Nj375, lateral view (IY159-025), tentatively assigned to this species; C, NIGP 152898, Nj375, lateral view (IY159-026). D–O, Scabbardella altipes (Henningsmoen, 1948). D–E, long-based acodiform element; D, NIGP 152899, Nj378, outer lateral view (IY153-016); E, NIGP 152900, Nj403, outer lateral view (IY161-021). F–G, medium-based acodiform element; F, NIGP 152901, Nj297, outer lateral view (IY159-012); G, NIGP 152902, AFT-X-K13/13, outer lateral view (IY167-002). H–O, asymmetrical distacodiform element; H, NIGP 152903, Nj376, outer lateral view (IY159-029); I–K, NIGP 152904, Nj378, I, outer lateral view (IY160- 017), J, inner lateral view (IY160-017), K, basal view (IY160-020); L–N, NIGP 152905, Nj379, L, upper view, close up of cross section of the cusp (IY160-035), M, inner lateral view (IY160-036), N, upper view (IY160-034); O, NIGP 152906, Nj379, outer lateral view (IY160-033). Scale bars 100 µm, unless otherwise indicated.

Figure 3 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 3. Conodont occurrences recorded in this study from the Dawangou section (Dawangou, Saergan and Kanling formations), Kalpin, Xinjiang Autonomous Region, China.

Figure 6 in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 6. Costiconus ethingtoni (Fåhraeus, 1966). A–D, M element; A–B, NIGP 152866, A, posterior view (IY166-016), B, basal-posterior view (IY166-017); C, NIGP 152867, posterior view (IY166-008); D, NIGP 152868, anterior view (IY166-015). E–I, Pb element; E–F, NIGP 152869, E, basal view (IY166-002), F, inner lateral view (IY166-001); G–H, NIGP 152870, G, outer lateral view (IY166-013), H, basal view (IY166-014); I, NIGP 152871, outer lateral view (IY166-009). J–L, Pa element; J, NIGP 152872, inner lateral view (IY166- 010); K–L, NIGP 152873, K, inner lateral view (IY166-004), L, inner-basal view (IY166-003). All from sample AFT-X-K13/13, scale bars 100 µm.

Figure 16. Periodon aculeatus Hadding 1913. A–B, M in Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China

Figure 16. Periodon aculeatus Hadding 1913. A–B, M element; A, NIGP 152979, posterior view (IY145-001); B, NIGP 152980, anterior view (IY145-002). C–E, Sa element; C–D, NIGP 152981, C, anterior view (IY145-003), D, lateral view (IY145-004); E, NIGP 152982, lateral view (IY145-006). F–I, Sb element; F–G, NIGP 152983, F, inner lateral view (IY145-010), G, outer lateral view (IY145-013); H–I, NIGP 152984, H, upper view (IY145-018), I, inner lateral view (IY145-020). J–K, Sc element; J, NIGP 152985, outer lateral view (IY145-016); K, NIGP 152986, inner lateral view (IY145-017). L–N, Pa element; L, NIGP 152987, inner lateral view (IY145-023); M, NIGP 152988, outer lateral view (IY145-024); N, NIGP 152989, basal view (IY145-025N). O–P, Pb element; O, NIGP 152990, outer lateral view (IY145-027); P, NIGP 152991, inner lateral view (IY145-026). All from sample Nj294; scale bars 100 µm.

Fig. 15. A–H in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 15. A–H, Stiptognathus borealis (Repetski, 1982). (A), M element, CPC39902, WCB705/243, posterior view (IY129-033). B–D, Sa element; B,C, CPC39903, WCB705/243, (B), upper-posterior view (IY118-006), (C), upper-anterior view (IY118-007); (D), CPC39904, WCB705/243, upper view showing the cross section of the cusp (IY118-004). E–G, Sb element, E,G, CPC39905, WCB705/133, (E), basal-posterior view (IY117-041), (G), posterior view (IY117-039). (F), CPC39906, WCB705/243, basal view (IY118-015). (H), Pb element, CPC39907, WCB705/243, antero-inner lateral view (IY118-008). I–K, Triangulodus bifidus Zhen in Zhen et al., 2006. Sd element, CPC39908, WCB705/133, (I), basal view (IY116-056), (J,K), posterolateral views (IY116-058, IY116-057). L–T, Semiacontiodus sp. cf. S. cornuformis (Sergeeva, 1963). L,M, Sa element, CPC39909, WCB705/133, (L), posterior view (IY126-027); (M), posterolateral view (IY126-028). N,O, Sb element; (N), CPC39910, 161–166 m, inner lateral view (IY132-012); (O), CPC39911, 161–166 m, outer lateral view (IY132-014). P–T, Sc element; P–R, CPC39912, 161–166 m, (P), inner lateral view (IY132-016); (Q), basal view (IY132-018); (R), outer lateral view (IY132-017). S,T, CPC39913, WCB705/133, (S), inner lateral view (IY127-018); (T), close up showing fine striae (IY127-019). Scale bars 100 µm unless otherwise indicated.

Fig. 14 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 14. Serratognathus diversus An, 1981. All from the Honghuayuan Formation in Guizhou. (A), Sb element, AM F.135050, THH7, basal-posterior view, showing fine growth laminar preserved on the lateral and posterior surfaces of the cusp (IY119-022). (B), Sc element, AM F.135825 (same specimen as Fig. 13K,L), THH12, close up showing growth laminar along the posterobasal margin (IY134-037). (C), Sc element, AM F.135816 (same specimen as Fig. 12G, H), THH9, closing up showing fine growth laminar on the posterior face (IY134-049). D,E, Sa element, AM F.135048, THH7, (D), close up showing fine growth laminar on the posterior face (IY119-006), (E), close up showing the small ring-like node representing the initial stage of the element (IY119-012). Scale bars 10 µm.

Fig. 13 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 13. Serratognathus diversus An, 1981. All from the Honghuayuan Formation in Guizhou. Showing size variation; A–E,G,I,K and M are magnified equally. (A), Sb element, AM F.135818, AFI983A, anterior view, bearing six laminar layers (IY133-046). (B), Sb element, AM F.135819, THH10, anterior view, bearing six laminar layers (IY133-038). C,M, Sc element, AM F.135820, YTH5, (C), anterior view, bearing eight laminar layers (IY133-024), (M), posterior view (IY134-019). (D), Sa element, AM F.135821, AFI986, upper-anterior view, bearing eight laminar layers (IY133-050). E,F, Sc element, AM F.135822, YTH4, (E), anterior view, bearing 10 laminar layers (IY133-021), (F), close up showing denticles along anterior margin of each laminar layer (IY133-022). …[continued on facing page]

Fig. 12 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 12. Serratognathus diversus An, 1981. All from the Honghuayuan Formation in Guizhou. A–C, Sa element; (A), AM F.135048, THH7, anterobasal view (IY119-004); (B), AM F.135044, THH7, lateral view (IY119-002); (C), AM F.135047, THH10, posterior view (IY119-040). (D), Sb element, AM F.135049, THH7, outer lateral view (IY119014); E–H, broken specimens showing overlapping laminar layers on the surface of breakage. E,F, Sb element, AM F.135815, THH7, (E), postro-lateral view (IY133-035), (F), upper view (IY133-037); G,H, Sc element, AM F.135816, THH9, (G), inner lateral view (IY133-040), (H), close up showing the surface of breakage (IY133-041); (I), Sc element, AM F.135817, YTH10, showing the partition between laminar layers and the fine laminar structure within each laminar layer (IY133-033). Scale bars 100 µm unless otherwise indicated.

Fig. 11. Serratognathus bilobatus Lee, 1970 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 11. Serratognathus bilobatus Lee, 1970. (A), Sa element, CPC39898, 161–166 m, anterior view (IY116-041). B–F, Sb element; B–E, CPC39899, WCB705/133, (B), posterior view (IY116-002), (C), outer lateral view (IY116-006), (D), upper view showing the tip of the cusp (IY116-012), (E), upper view (IY116-011); (F), CPC39900, WCB705/133, anterior view (IY116-028). G–L, Sc element, CPC39901, WCB705/133, (G), posterior view (IY116-013), L, upper view (IY116-023), (H), basal-posterior view (IY116018), (I), posterior view of the cusp (IY116-014), (J), posterior view, close up showing fine striae (IY116-015), (K), basal view showing ring-like basal node (IY116-022). Scale bars 100 µm unless otherwise indicated.

Fig. 10. A–K in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 10. A–K, Scolopodus houlianzhaiensis An & Xu in An et al., 1983. All from sample 161–166 m. A–D, Sa element; A,B, CPC39880, (A), posterior view (IY130-011), (B), lateral view (IY130-010); C,D, CPC39881, (C), basal view (IY130-009), (D), lateral view (IY130-007). E–G, Sb element, CPC39882, (E), posterior view (IY130-017), (F), inner lateral view (IY130-016), (G), outer lateral view (IY130-018). H–K, Sc element; H,I, CPC39883, (H), posterior view (IY129-028), (I), inner lateral view (IY129-029); J,K, CPC39884, (J), outer lateral view (IY130-019), (K), inner lateral view (IY130-021). L–R, Lissoepikodus nudus Nicoll & Ethington, 2004. L,M, Sa element, CPC39885, WCB705/133, (L), upper view (IY127-002); (M), posterior view (IY127-003). N,O, Pb element; (N), CPC39886, WCB705/133, outer lateral view (IY127-014); (O), CPC39887, WCB705/133, outer lateral view showing weaker costa (IY127-006). P,Q, Sb element; (P), CPC39888, WCB705/243, basal view (IY118-016); (Q), CPC39889, WCB705/133, inner lateral view (IY126-034). (R), Sd element, CPC39890, WCB705/133, basal-inner lateral view (IY126-033). S–U, Nasusgnathus dolonus (An, 1981). All from sample WCB705/133. S,T, Sd element; (S), CPC39891, inner lateral view (IY127-008); (T), CPC39892, outer lateral view (IY127-007). (U), Sb element, CPC39893, WCB705/133, outer lateral view (IY127-005). (V),?Protoprioniodus simplicissimus McTavish, 1973. Sb element, CPC39894, WCB705/243, outer lateral view (IY129-035). (W), gen. et sp. indet. B. Sa element, CPC39895, WCB705/133, posterior view (IY126-036). (X), Paltodus sp. M element, CPC39896, WCB705/133, posterior view (IY126-014). (Y), gen. et sp. indet. A. Symmetrical stout element, CPC39897, WCB705/133, lateral view (IY127-034). Scale bars 100 µm unless otherwise indicated.

Fig. 7 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 7. Paroistodus parallelus (Pander, 1856). All from sample WCB705/133. A–D, M element; (A), CPC39842, anterior view (IY117-002); B,C, CPC39843, (B), anterior view (IY117-005); (C), basal view (IY117-006); (D), CPC39844, posterior view (IY117-008). E–G, Sa element; E,F, CPC39845, (E), lateral view (IY117-010), (F), basal view (IY117-011); (G), CPC39846, lateral view (IY117-009). H–J, Sb element; (H), CPC39847, outer lateral view (IY117-017); I,J, CPC39848, (I), inner lateral view (IY117-016), (J), basal view (IY117-018). K–M, Sc element; K,L, CPC39849, (K), basal view (IY117-014), (L), inner lateral view (IY117-013); (M), CPC39850, outer lateral view (IY117-012). N,O, Sd element; (N), CPC39851, inner-basal view (IY117-025); (O), CPC39852, outer lateral view (IY117-029). (P), Pb element; CPC39853, outer lateral view (IY132-020). Q–S,?Pa element, (Q), CPC39854, basal view (IY117-036), (R), CPC39855, outer lateral view (IY117-030); (S), CPC39856, inner lateral view (IY117-034). Scale bars 100 µm.

Fig. 9. Protopanderodus gradatus Serpagli, 1974. All from sample WCB705 in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 9. Protopanderodus gradatus Serpagli, 1974. All from sample WCB705/243. A–C, Sa element; (A), CPC39869, lateral view (IY128-010); (B), CPC39870, lateral view (IY128-011); (C), CPC39871, basal view (IY128-008). D–G, Sc element; (D), CPC39872, inner lateral view (IY128-001); (E), CPC39873, inner lateral view (IY128-002); (F), CPC39874, basal-inner lateral view (IY128-005); (G), CPC39875, upper-inner lateral view (IY128-009). H,I, P element, CPC39876, (H), inner lateral view (IY128-019); (I), basal-outer lateral view (IY128-020). J–P,?M element; J–K, CPC39877, (J), inner lateral view (IY129-037); (K), close-up inner lateral view, showing striae near the furrow and chevron-shaped pattern of striae adjacent to anterior margin (IY129-038); L,M, CPC39878, (L), outer lateral view (IY129-041); (M), anterior view (IY129-039); N–P, CPC39879, (N), inner lateral view (IY129-042); (O), close-up inner lateral view, showing striae near the furrow and chevron-shaped pattern of striae adjacent to anterior margin (IY129-043); (P), close up showing rounded boring hole on the surface (IY129-044). Scale bars 100 µm unless otherwise indicated.

Fig. 8. A–K in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 8. A–K, Paroistodus proteus (Lindström, 1955). (A), M element, CPC39857, WCB705/133, posterior view (IY132-023). B,C, Sb element; (B), CPC39858, WCB705/133, inner view (IY132-022); (C), CPC39859, WCB705/133, outer lateral view (IY130-040). D,E, Sc element; (D), CPC39860, 161–166m, outer lateral view (IY130-025); (E), CPC39861, WCB705/133, inner lateral view (IY132-029). (F), Sd element, CPC39862, 161–166m, innrt lateral view (IY130-026). G–J, Pb element; (G), CPC39863, WCB705/133, outer lateral view (IY117-020); H,I, CPC39864, WCB705/133, (H), basal view (IY117-021), (I), inner lateral view (IY117-022); (J), CPC39865, WCB705/133, inner lateral view (IY130-043). (K), Sa element, CPC39866, WCB705/133, lateral view (IY130-41). L–O, gen. et sp. indet. A. All from sample WCB705/133. L,M, symmetrical element, CPC39867, (L), basal-posterior view (IY132-024), (M), lateral view (IY132-025). N,O, asymmetrical element, CPC39868, (N), outer lateral view (IY132-028), (O), anterior view (IY132-027). Scale bars 100 µm.

Fig. 6. A–F in Biogeographic and Biostratigraphic Implications of the Serratognathus bilobatus Fauna (Conodonta) from the Emanuel Formation (Early Ordovician) of the Canning Basin, Western Australia

Fig. 6. A–F, Paracordylodus gracilis Lindström, 1955. All from sample WCB705/243. (A), M element, CPC39827, anterior view (IY116-050). B–E, S elements; B–C, CPC39828, (B), inner lateral view (IY116-051); (C), close up showing chevron-shaped pattern of striae adjacent to anterior margin (IY126-052); (D), CPC39829, inner lateral view (IY126-053); (E), CPC39830, outer lateral view (IY126-054); (F), P element, CPC39928, outer lateral view (IY116055). G,H,L, Prioniodus adami Stouge & Bagnoli, 1988. G,H, Pa element, CPC39831, WCB705/243, (G), antero-outer lateral view (IY118-018); (H), outer lateral view (IY118-019). (L), Sa element, CPC39832, WCB705/243, posterior view (IY128-021). M–R, Protoprioniodus simplicissimus McTavish, 1973. All from sample WCB705/243. M, N, Sc element; (M), CPC39833, outer lateral view (IY118-020); (N), CPC39834, inner lateral view (IY118-030). O,P, Pa element, CPC39835, (O), inner lateral view (IY118-025); (P), upper-outer lateral view (IY118-023). Q,R, M element; (Q), CPC39836, anterior view (IY129-032); (R), CPC39837, posterior view (IY118-029). I–K, S–V, Fahraeusodus adentatus (McTavish, 1973). I–K, Sa element, CPC39838, WCB705/133, (I), lateral view (IY127-012); (J), anterior view, close up showing striae on the broad anterior face (IY127-011); (K), anterior view (IY127-010). (S), Sc element, CPC39839, 161–166 m, inner lateral view (IY130-001). (T), Sb element, CPC39840, 161–166 m, outer lateral view (IY130-002). U,V, Sd element, CPC39841, 161–166 m, (U), inner lateral view (IY130-005); (V), outer lateral view (IY130-006). Scale bars 100 µm unless otherwise indicated.