Dzikodus, Zhang, 1998

Zhen, Yong Yi, 2011, Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China, Records of the Australian Museum 63 (3), pp. 203-266 : 227

Dzikodus ? tablepointensis ( Stouge, 1984)

Fig. 13A–K

Polonodus tablepointensis Stouge, 1984: 72 , pl. 12, fig. 13, pl. 13, figs 1–5 (cum syn.).

Dzikodus tablepointensis (Stouge) .–Zhang, 1998c: 65–69, pl. 7, figs 1–12, pl. 8, figs 1–6 (cum syn.).

Material. 31 specimens from two samples at the top of the Dawangou Formation ( Tables 1–2).

Remarks. This species is rarely represented in the Dawangou samples with stelliscaphate Pb ( Fig. 13A–B ), alate Sa ( Fig. 13C–G ), tertiopedate Sb ( Fig. 13H–I ), and quadriramate Sd ( Fig. 13J–K ) elements recovered. The Pb element has four processes, an inconspicuous cusp and a wide open basal cavity, and is comparable with those illustrated from the Guniutan Formation of South China (Zhang, 1998c, pl. 7, figs 7–9). However, as the two illustrated specimens assigned to the Pb element are incomplete with one lateral process broken off, they are only tentatively referred to D. tablepointensis .

Figures

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.