Xenodermichthys senesi Nolf & Brzobohatý, 1994

Lin, Chien-Hsiang, Brzobohatý, Rostislav, Nolf, Dirk & Girone, Angela, 2017, Tortonian teleost otoliths from northern Italy: taxonomic synthesis and stratigraphic significance, European Journal of Taxonomy 322, pp. 1-44 : 15

Xenodermichthys senesi Nolf & Brzobohatý, 1994

A large specimen ( Fig. 2P ) in our material is somewhat higher in its overall shape and the antero-dorsal angle is more pronounced than those of the similar-sized Chattian type specimens from the Aquitaine Basin, southwest France ( Nolf & Brzobohatý 1994: pl. 2, figs 5, 11); the smaller specimens in our material ( Fig. 2 N–O) are characterised by thick otoliths and a convex outer face, and are reasonably similar to the type series from Aquitaine ( Nolf & Brzobohatý 1994: pl. 2, figs 6–10). Because modern alepocephalid otoliths commonly show a great intraspecific variability (e.g., Nolf & Brzobohatý 1994: pl. 2, figs 1–4), the specimens in question are all assigned to X. senesi . The studied material, including large and small specimens, allows us to refer the otoliths figured by Lin et al. (2015: fig. 2(5), as Xenodermichthys aff. copei (Gill, 1884)) to juvenile specimens of X. senesi .

Figures

Fig. 2. Tortonian fish otoliths from northern Italy. A. Pterothrissus umbonatus (Koken, 1884), Montegibbio (IRSNB P 9855). B. Paraconger sp., Torrente Stirone (IRSNB P 9856). C. Xenomystax sp., Torrente Stirone (IRSNB P 9857). D. Conger conger (Linnaeus, 1758), Torrente Stirone (IRSNB P 9858). E. Argentina sp., Torrente Stirone (IRSNB P 9859). F. Rhynchoconger pantanellii (Bassoli & Schubert, 1906), Torrente Stirone (IRSNB P 9860). G–I. Bathycongrus nagymarosyi (Nolf & Brzobohatý, 1994), Torrente Stirone (IRSNB P 9699–P 9701). J–K. Gnathophis mystax (Delaroche, 1809), Torrente Stirone (IRSNB P 9702–P 9703). L–M. Nansenia sp., Mondovi, Madonna della Neve (IRSNB P 9704–P 9705). N–P. Xenodermichthys senesi Nolf & Brzobohatý, 1994, Mondovi, Madonna della Neve (IRSNB P 9706–P 9708). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.