Middle to Late Ordovician (Darriwilian-Sandbian) Conodonts from the Dawangou Section, Kalpin Area of the Tarim Basin, Northwestern China Author Zhen, Yong Yi text Records of the Australian Museum 2011 2011-11-30 63 3 203 266 http://dx.doi.org/10.3853/j.0067-1975.63.2011.1586 journal article 10.3853/j.0067-1975.63.2011.1586 2201-4349 5239657 Drepanodus arcuatus Pander, 1856 Fig. 10A–N Drepanodus arcuatus Pander, 1856: 20 , pl. 1, figs 2, 4–5, 17, 30,?31; An, 1981: pl. 3, fig. 22; An et al ., 1985: pl. 4, figs 6–11, pl. 12, 10–13, 15; An, 1987: 143–144 , pl. 8, figs 7–9, 11–12, 15–18, 24; Ni & Li, 1987: 403, pl. 59, figs 6–7; Bergström, 1988 : pl. 1, figs 4–5; Duan, 1990 : pl. 2, figs 25–26; Ding et al . in Wang, 1993: 171, pl. 10, figs 1–4, 8–11, 17,?20; Chen & Bergström, 1995: pl. 8, figs 10, 16; Zhang, 1998c: 59–60, pl. 4, figs 7–11, 15–16 ( cum syn .); Wang & Bergström, 1999 a: 334, pl. 2, figs 4–5; Wang, 2001: 352, pl. 1, figs 2, 6; Löfgren & Tolmacheva, 2003b: 211–215, figs 2, 3A–C, E–H, 5K–V, 6M–U, 7H–N, 8A–G ( cum syn .); Zhen et al ., 2004a: 52–53, pl. 3, figs 1–12; Agematsu et al ., 2007: 31 , fig. 13.9; Ortega et al. , 2008 : fig. 6.27–6.28; Zhen et al ., 2009b: fig. 5A–N ( cum syn .); Zhen & Nicoll, 2009: 11, fig. 5A–F; Viira, 2011: figs 14A,?B, C–G,?H, I, K, S, 15A–E,?F–G.