Eurygnathodus costatus Staesche 1964
Creators: name: Leu, Marc
name: Bucher, Hugo
name: Vennemann, Torsten
name: Bagherpour, Borhan
name: Ji, Cheng
name: Brosse, Morgane
name: Goudemand, Nicolas
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Ozarkodinida
Gondolellidae
Eurygnathodus
Eurygnathodus costatus

description: Eurygnathodus costatus Staesche, 1964
Fig. 14A
*1964 Eurygnathodus costatus n. sp.; Staesche, p. 269, pl. 28, figs. 1–6.
1977 Platyvillosus costatus (Staesche); Goel, p. 1098, pl. 2, figs. 15–21.
1981 Platyvillosus costatus (Staesche); Wang & Cao, p. 371, pl. 2, figs. 1–4, 28–30, 33.
1981 Platyvillosus paracostatus n. sp.; Wang & Cao, p. 371, pl. 2, figs. 9,10.
1984 Platyvillosus costatus (Staesche); Matsuda, p. 128, pl. 6, figs. 6–10.
1988 Platyvillosus costatus (Staesche); Koike, p. 65, pl. 1, figs. 1–57, pl. 2, figs. 1–37.
1991 Platyvillosus costatus (Staesche); Beyers & Orchard, pl. 5, fig. 10.
2009 Eurygnathodus costatus Staesche; Igo in Shigeta et al., p. 183, figs. 152.23–152.24.
2010 Eurygnathodus costatus Staesche; Orchard, p. 145, fig. 5.9–5.10.
2013 Platyvillosus hamadai Koike; Zhao et al., p.535, figs. 10K, L.
2013 Platyvillosus costatus (Staesche); Zhao et al., p.535, figs. 10M, 10N, 10O.
2014 Eurygnathodus costatus Staesche; Maekawa & Igo in Shigeta et al., p. 220, figs. 161.4–161.6
2015 Eurygnathodus hamadai Staesche; Maekawa in Maekawa et al., p. 316, fig. 5.1.
2016 Eurygnathodus costatus Staesche; Chen et al., fig. 11.3, 11.6–11.7.
2018 Eurygnathodus costatus Staesche; Maekawa in Maekawa et al., pp. 45–50, figs. 25–27.
2019 Eurygnathodus costatus Staesche; Li et al., p. 6, fig. 4.22–4.36.
2019 Eurygnathodus costatus Staesche; Lyu et al., fig. 7.12.
2019a Eurygnathodus costatus Staesche; Wu et al., fig. 4.20.
Material.> 30 specimens.
Remarks. Goel (1977), Matsuda (1984), Koike (1988) and Maekawa et al. (2018) documented a large intraspecific variation of the platform morphology and its oral ornamentation. It follows that Platyvillosus paracostatus Wang and Cao (1981) likely corresponds to a variant of Eu. costatus (Form A in Koike 1988). Maekawa et al., (2018, figs. 25.1d) documented also specimens covered with microgranules.
Occurrence. Tis species has been reported worldwide from the early Smithian Flemingites zone. Japan: Tahogawa member within the Novispathodus ex gr. waageni Zone (Koike, 1988; Maekawa et al., 2018), Europe: South Tyrol, Slovenia, Croatia and Bosnia and Herzegovina (Aljinović et al., 2006; Chen et al., 2016; Kolar-Jurkovšek et al., 2021; Staesche, 1964), India: Spiti and Kashmir (Goel, 1977; Matsuda, 1984; Orchard, 2010; Orchard & Krystyn, 2007), Russia; South Primorye (Shigeta, 2009), Canada: British Columbia (Beyer & Orchard, 1991), South China and North-eastern Vietnam (Chen et al., 2015; Shigeta et al., 2014).
description: Published as part of 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, pp. 1-61 in Swiss Journal of Palaeontology (19) (19) 141 (1) on page 52, DOI: 10.1186/s13358-022-00259-x, http://zenodo.org/record/12000082