Denaea wangi Wang, Jin, and Wang, 2004

Ginter, Michał & Złotnik, Michał, 2019, Mississippian chondrichthyan fishes from the area of Krzeszowice, southern Poland, Acta Palaeontologica Polonica 64 (3), pp. 549-564 : 552-553

publication ID	https://doi.org/ 10.4202/app.00619.2019
persistent identifier	https://treatment.plazi.org/id/DD016347-6077-FFCC-FC8E-5C83FAE5E6E3
treatment provided by	Felipe
scientific name	Denaea wangi Wang, Jin, and Wang, 2004
status

Treatment

Fig. 4A–C View Fig .

2004 Denaea wangi sp. nov.; Wang et al. 2004: 98–99, fig. 10A, 11.

2010 “ Denaea wangi ” Wang, Jin, and Wang, 2004 ; Ginter et al. 2010: 66–67, fig. 61.

2015 Denaea wangi Wang, Jin, and Wang, 2004 ; Ginter et al. 2015: 911–913 View Cited Treatment , fig. 13A–D.

Material.— Three teeth ( ZPAL P. IV/303–305) from the upper Viséan, Czerna, sample Cz-1.

Description.— The teeth of Denaea wangi are minute, 0.4– 0.7 mm mesio-distally. The crown is cladodont, asymmetrical, with seven to eight delicate cusps inclined distally. The highest cusp is situated not exactly in the median position, but slightly displaced in the mesial direction. There is different number of lateral cusps on the mesial (2–3) and distal (3–4) sides. The difference in size between the cusps is moderate. The base is thin and flat, triangular in the oral view, with a tiny basolabial tubercle ( Fig. 4A View Fig 1, C 1 View Fig ).

Remarks.— The extensive discussion on the validity of this species and its similarity to “small Damocles ” from the Serpukhovian of Bear Gulch, Montana, was given by Ginter et al. (2015). Here it can be added that although the teeth of Denaea wangi usually occur together with the teeth of some larger falcatids, no specific species was observed to repeat in such associations. At Czerna, it is Falcatidae indet. 2; at Todowa Grząba (Holy Cross Mountains, Poland) it is Denaea cf. fournieri ; in the type material from China it is “ Stethacanthus ” gansuensis; in Montana, USA: Damocles and Falcatus , etc. This supports the idea that D. wangi is indeed a small, separate species, and not only a juvenile form (as incorrectly suggested by Ginter et al. 2010).

Stratigraphic and geographic range.— Upper Viséan of northern Europe ( Poland, Belgium) and China (Gansu). Perhaps also Serpukhovian of Montana, USA (articulated specimens, Ginter et al. 2010: fig. 59C).