Dasyatis sp.

Schwarzhans, Werner, Klots, Oleksandr, Ryabokon, Tamara & Kovalchuk, Oleksandr, 2022, A rare window into a back-reef fish community from the middle Miocene (late Badenian) Medobory Hills barrier reef in western Ukraine, reconstructed mostly by means of otoliths, Swiss Journal of Palaeontology (18) 141 (1), pp. 1-35 : 24-25

publication ID	https://doi.org/ 10.1186/s13358-022-00261-3
persistent identifier	https://treatment.plazi.org/id/039D7D5B-FE5E-FFBA-F872-FA70FF60FC52
treatment provided by	Felipe
scientific name	Dasyatis sp.
status

Treatment

Dasyatis sp.

Figure 10f View Fig

Material 1 anterior tooth, Mlyntsi, NMNHU-P PI 2587.

Description Te tooth is small and wider than it is high (1.50 vs. 0.90 mm). A clearly recognizable bulging transverse crest separates the labial and lingual faces in the middle of the crown. Te globular and non-cuspidate crown suggests that the described specimen belongs to a stingray female ( Cappetta, 2012). Te labial visor is partly broken, and no ornamentation can be observed on the labial face. Te smooth lingual face is divided into two marginal lingual areas by a median lingual ridge. Tere are distinct marginal angles, one of which is more rounded, while the other is sharper. Te convex lingual visor partially overhangs the labial face of the root. Te latter is bilobed; its lobes slightly differ in width and are displaced lingually. Tere is a deep but quite narrow notch separating the lobes and reaching half of the root height. Weakly separated and wide root lobes also indicate that the tooth belongs to a female ( Cappetta, 2012).

Discussion Te specimen described shares diagnostic features of the genus Dasyatis Rafinesque, 1810 , and differs from representatives of the genus Taeniurops Garman, 1913 , in the non-hollowed labial face lacking sharp crests. However, it cannot be attributed to a particular species due to its poor preservation. Te middle Miocene fossil record of stingrays of the genus Dasyatis in Europe is represented by D. delfortriei Cappetta, 1970 , D. probsti Cappetta, 1970 , and D. rugosa (Probst, 1877) , which have been variably reported from the early Badenian of Korytnica, Poland ( Schultz, 1977, 1979) and from the late Badenian of Weissenegg and Wurzing in Austria ( Hilden, 1995).