Paraxenomystax cf. bidentatus Reid, 1940

Schwarzhans, Werner, 2023, Geology and stratigraphy of the Neogene section along the Oued Beth between Dar bel Hamri and El Kansera (Rharb Basin, northwestern Morocco) and its otolith-based fish fauna: a faunal inventory for the Early, Swiss Journal of Palaeontology (4) 142 (1), pp. 1-85 : 18

publication ID	https://doi.org/10.1186/s13358-023-00268-4
persistent identifier	https://treatment.plazi.org/id/03ED255D-3B21-FFAA-99BF-6BFCFE595606
treatment provided by	Felipe
scientific name	Paraxenomystax cf. bidentatus Reid, 1940
status

Treatment

Paraxenomystax cf. bidentatus Reid, 1940 View in CoL

Figure 10n View Fig

Material 2 specimens, Zanclean, Dar bel Hamri ( SMF PO 101.273 ) .

Discussion Paraxenomystax is commonly recorded as a junior synonym of Xenomystax Gilbert, 1891 (see Fricke et al. 2022). Te otoliths of the type species P. bidentatus show a centrally positioned colliculum with an anterior spur and thus differ from those of other Xenomystax species (see Lin et al., 2017 and Schwarzhans, 2019b for extant otoliths). I, therefore, keep Paraxenomystax provisionally valid here. Te single extant species, Paraxenomystax bidentatus is only known from the tropical West Atlantic. Te fossil record from Morocco is only tentatively placed in the extant species because of the geographic difference and only two specimens being available from Morocco.