Aetobatus arcuatus (Agassiz, 1843)

Szabó, Márton, 2019, Middle Miocene (Badenian) chondrichthyan and osteichthyan remains from St. Margarethen (eastern Austria) in the vertebrate palaeontological collection of the Hungarian Natural History Museum, Fragmenta Palaeontologica Hungarica 36, pp. 53-90 : 72-73

publication ID	https://doi.org/10.17111/FragmPalHung.2019.36.53
DOI	https://doi.org/10.5281/zenodo.16797664
persistent identifier	https://treatment.plazi.org/id/038887E6-D807-6713-33B2-BF3F0FEEFE57
treatment provided by	Felipe
scientific name	Aetobatus arcuatus (Agassiz, 1843)
status

Treatment

( Figs 92–95 View Figs 92–95 )

Referred material – 10 teeth ( V.61.913, V.61.936, V.63.671).

Description – Only lower teeth are known in the HNHM collection. Lower teeth of A. arcuatus are of crescent shape, with distally curved lateral edges. The crown is low and straight with smooth occlusal surface. The crown is separated from the root by a lingual bulge. The root is lingually shifted, it is built up by long, distally inclined laminae ( Figs 92–94 View Figs 92–95 ). Specimen V.61.936 is a partial upper dentition, consisting of at least 3 teeth ( Fig. 95 View Figs 92–95 ).

Remarks – Dentition of genus Aetobatus consists of a single row of teeth, in a conveyor-like, horizontal arrangement both in the upper and lower jaw ( BOR et al. 2012; HOVESTADT & HOVESTADT-EULER 2013). Fossil species A. arcuatus is widely known from the Badenian Central Paratethys ( SZABÓ & KOCSIS 2016, table 2).