Novispathodus clinatus ( Orchard 1995 )

Leu, Marc, Bucher, Hugo, Vennemann, Torsten, Bagherpour, Borhan, Ji, Cheng, Brosse, Morgane & Goudemand, Nicolas, 2022, A Unitary Association-based conodont biozonation of the Smithian-Spathian boundary (Early Triassic) and associated biotic crisis from South China, Swiss Journal of Palaeontology (19) 141 (1), pp. 1-61 : 36

Novispathodus clinatus ( Orchard 1995)

Fig. 21K

*1995 Neospathodus clinatus n. sp. Orchard & Sweet in Orchard, p. 119, figs. 3.5–3.7

Number of specimens. 8

Remarks. Tis segminate element is relatively short and small. Te basal cavity is subtriangular in outline. Te posterior and anterior margins are abrupt and show both a bowed outline. Te seven denticles are uniformly reclined. Other specimens assigned to Novispathodus clinatus sensu lato (e.g. Nv. aff. clinatus in Chen et al., 2015, fig. 5 or Nv. aff. clinatus in Maekawa et al., 2018, figs. 19.9–19.13) usually show a more elliptical basal cavity and a blade with a higher length: height ratio with more gradually declining denticles in the anterior part. Tis species resembles Nv. brevissimus with a subtriangular shaped basal cavity but the denticles in the latter species are less uniformly reclined and more numerous.

Occurrence. Top of Narmia Member of the Mianwali Formation at Narmia Pakistan ( Orchard 1995); Laren section, Luolou Fm., Spathian, Guangxi, South China (this study).

Figures

Fig. 21 Novispathodinae from Qiakong,Laren, Shanggang and Lilong. Magnification is × 80.The scale bar is 400 μm. All elements are considered to be P1 elements if not specifically identified otherwise. A–J, L, M, Novispathodus brevissimus (Orchard); A LIL515A, PIMUZ 39184; B LIL513A,PIMUZ 39185; C BAN2,PIMUZ 39186; D SHA312, PIMUZ 39187; E SHA313, PIMUZ 39188; F LIL515A, PIMUZ 39189; G LIL509, PIMUZ 39190;H LIL509, PIMUZ 39191; I LIL514B, PIMUZ 39192;J LIL509, PIMUZ 39193;L QIA141, PIMUZ 39195; M QIA144, PIMUZ 39197.K, Novispathodus clinatus (Orchard and Sweet in Orchard); BAN5, PIMUZ 39207