Hoplostethus Cuvier, 1829

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 : 26

publication ID	https://doi.org/10.5852/ejt.2017.322
DOI	https://doi.org/10.5281/zenodo.3848333
persistent identifier	https://treatment.plazi.org/id/61599612-947F-CE2F-7A1E-A539FC27906D
treatment provided by	Carolina (2020-05-15 17:07:41, last updated 2024-11-26 04:58:04)
scientific name	Hoplostethus Cuvier, 1829
status

Treatment

Genus Hoplostethus Cuvier, 1829 View in CoL View at ENA

Description

A large, adult otolith ( Fig. 10F View Fig ) of Hoplostethus lawleyi Koken, 1891 is easily distinguished from the Miocene Hoplostethus praemediterraneus Schubert, 1905 ( Fig. 10 View Fig A–E) by its very depressed anterodorsal area. This feature also characterises large-sized otoliths of the extant Hoplostethus mediterraneus Cuvier, 1829 , but otoliths of H. lawleyi are different from those of H. mediterraneus in having a wider sulcus, a strongly developed ostial colliculum and a narrower ventral area. The distinction between H. mediterraneus and H. praemediterraneus can be made with the help of the growth series of H. praemediterraneus from the Badenian of the Carpathian Foredeep (Brzobohatý 1978: pl. 1, figs 1–16, as Hoplostethus levis biexcissus and H. l. levis ) and of our material ( Fig. 10 View Fig A–E), which clearly demonstrate that the otoliths of H. praemediterraneus are, at each stage, higher and more compact in shape than those of H. mediterraneus (see Nolf 2013: pl. 165).

References

Nolf D. 2013. The Diversity of Fish Otoliths, Past and Present. Royal Belgian Institute of Natural Sciences, Brussels.

Figures

Fig. 10. Tortonian fish otoliths from northern Italy. A–E. Hoplostethus praemediterraneus Schubert, 1905; A–B. Montegibbio, C–E. Sant’Agata Fossili (IRSNB P 9804–P 9808). F. Hoplostethus lawleyi Koken, 1891, Sant’Agata Fossili (IRSNB P 9809). G. Parascombrops mutinensis (Bassoli, 1906), Torrente Stirone (IRSNB P 9810). H. “Haemulon” lucidum (Bassoli, 1906), Montegibbio (IRSNB P 9811). I. Pomadasys cf. incisus (Bowdich, 1825), Sant’Agata Fossili (IRSNB P 9812). J. Epigonus constanciae (Giglioli, 1880),Torrente Stirone(IRSNB P 9813). K. Gerreidaeindet., Montegibbio(IRSNB P 9814). L. Cepola macrophthalma (Linnaeus, 1758), Torrente Stirone (IRSNB P 9815). M. Epigonus italicus (Bassoli, 1906), Montegibbio (IRSNB P 9816). N. Dentex aff. maroccanus Valenciennes, 1830, Sant’Agata Fossili (IRSNB P 9817). O–Q. Owstonia neogenica (Nolf & Cappetta, 1989), Torrente Stirone (IRSNB P 9818–P 9820). 1 = ventral view; 2 = inner view; 3 = anterior view. Scale bars = 1 mm.