Drepanodus reclinatus ( Lindström, 1955a )

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 : 222

publication ID	https://doi.org/ 10.3853/j.0067-1975.63.2011.1586
persistent identifier	https://treatment.plazi.org/id/03CCEB77-FFC3-6361-FC06-FE029122F9B5
treatment provided by	Felipe
scientific name	Drepanodus reclinatus ( Lindström, 1955a )
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Drepanodus reclinatus ( Lindström, 1955a)

Fig. 11A–P View Figure 11

Acontiodus reclinatus Lindström, 1955a: 548 , text-fig. 3C, pl. 2, figs 5–6.

Drepanodus reclinatus (Lindström) .–Zhang, 1998c: 60–61, pl. 4, figs 12–14, 17–20 (cum syn.); Löfgren & Tolmacheva, 2003: 216–217, figs 5A–J, 7A–G (cum syn.); Ortega et al., 2007: fig. 6M; Ortega et al., 2008: fig.6.17–6.18.

Drepanodus arcuatus Pander. – Armstrong, 2000: 49, pl. 3, figs 1–18.

Drepanodus sp. A .–Zhen & Percival, 2004b: 159–160, partim, only fig. 3D, F–I; non fig. 3E = Protopanderodus .

Protopanderodus robustus (Hadding) .– An et al., 1983: 132, pl. 15, fig. 21; An & Zheng, 1990: pl. 6, figs 15–17; Chen & Bergström, 1995: partim only pl. 8, figs 3–4; Wang & Bergström, 1998: 342, partim only pl. 2, figs 7, 9.

Cornuodus longibasis (Lindström, 1955) .–Wang & Qi, 2001: pl. 1, fig. 11.

Paroistodus sp. An & Zheng, 1990: pl. 6, fig. 11.

Material. 116 specimens from 26 samples (see Tables 1–2).

Remarks. All seven elements (except for the Sd) recovered from Dawangou ( Fig. 11A–P View Figure 11 ) are identical with those illustrated by Löfgren & Tolmacheva (2003). Elements of D. reclinatus can be distinguished from D. arcuatus and other species of Drepanodus by being laterally costate.

Some specimens ascribed to Drepanodus sp. A from the Weemalla Formation (Darriwilian) of central New South Wales should be re-assigned to D. reclinatus representing the M (Zhen & Percival, 2004b, fig. 3D) and Pa (Zhen & Percival, 2004b, fig. 3F–I) elements. One figured specimen of D. sp. A (Zhen & Percival, 2004b, fig. 3E) represents an asymmetrical bicostate element of a Protopanderodus species , comparable to those described by Zhen & Percival (2004b, p. 172, fig. 11G–O) as Protopanderodus robustus ( Hadding, 1913) . However, P. robustus remains a poorly-known species, and may be more closely related to multicostate species rather than bicostate Protopanderodus species (see discussion under remarks of P. cooperi ). Specimens previously assigned to P. robustus by various authors may belong to D. reclinatus (see synonymy list; also Löfgren & Tolmacheva, 2003).

Kingdom	Animalia
Phylum	Chordata
Class	Conodonta
Order	Conodontophorida
Family	Distacodontidae
Genus	Drepanodus