Coelorinchus robustus ( Robba, 1970 )

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 : 23

publication ID	https://doi.org/10.5852/ejt.2017.322
DOI	https://doi.org/10.5281/zenodo.3848329
persistent identifier	https://treatment.plazi.org/id/61599612-9470-CE20-7A77-A519FEC19182
treatment provided by	Carolina (2020-05-15 17:07:41, last updated 2024-11-26 04:58:04)
scientific name	Coelorinchus robustus ( Robba, 1970 )
status

Treatment

Coelorinchus robustus ( Robba, 1970)

The material of C. robustus known from the literature ( Robba 1970: pl. 10, figs 4–6, pl. 11, figs 1–2; Nolf & Steurbaut 1983: pl. 5, fig. 11; Brzobohatý 1995: pl. 2, figs 1–2; Lin et al. 2015: fig. 3(12)) as well as our material ( Fig. 8 View Fig L–M) all consist of huge adult otoliths. At a first glance, they resemble those of large Coelorinchus caelorhincus (Risso, 1810) (see Fig. 8A View Fig ) a lot, but, apart from the extraordinary size of the specimens, the cauda is much longer in C. robustus , the posterior tip of the otolith is slightly directed upwards, and the collicula are wider and closer to each other at the collum, sometimes they are even fused together dorsally. One of the otoliths of C. caelorhincus figured by Lin et al. (2015: fig. 3(12)) exhibits the aforementioned features, suggesting much closer similarities to C. robustus than C. caelorhincus .

References

Brzobohaty R. 1995. Macrouridae (Teleostei, Otolithen) im Oligozan und Miozan der Zentralen Paratethys und ihre palaogeographische Bedeutung. Jahrbuch der Geologischen Bundesanstalt, Wien 138 (4): 615 - 637.

Lin C. - H., Girone A. & Nolf D. 2015. Tortonian fish otoliths from turbiditic deposits in northern Italy: taxonomic and stratigraphic significance. Geobios 48: 249 - 261. https: // doi. org / 10.1016 / j. geobios. 2015.03.003

Nolf D. & Steurbaut E. 1983. Revision des otolithes de teleosteens du Tortonien stratotypique et de Montegibbio (Miocene Superieur d'Italie septentrionale). Mededelingen van de Werkgroep voor Tertiaire en Kwartaire Geologie 20: 143 - 197.

Robba E. 1970. Otoliti del Tortoniano-tipo (Piemonte). Rivista Italiana di Paleontologia 76: 89 - 172.

Figures

Fig. 8. Tortonian fish otoliths from northern Italy. A. Coelorinchus caelorhincus (Risso, 1810), Montegibbio (IRSNB P 9772). B. Coryphaenoides contortus (Bassoli, 1906), Sant’Alosio (IRSNB P 9773). C–D. “Merluccius” rattazzii sp. nov., Sant’Alosio (IRSNB P 9686 (holotype)–P 9687). E–F. Coryphaenoides biobtusus sp. nov., Alba, Tanaro (5 m) (IRSNB P 9684 (holotype)–P 9685). G–H. Nezumia aff. sclerorhynchus (Valenciennes, 1838), Alba, Tanaro (5 m) (IRSNB P 9774–P 9775). I–J. Moridae indet., Sant’Agata Fossili (IRSNB P 9776–P 9777). K. Nezumia ornata (Bassoli, 1906), Montegibbio (IRSNB P 9778). L–M. Coelorinchus robustus (Robba, 1970); L. Stazzano, M. Sant’Alosio (IRSNB P 9779–P 9780). N. Gadiculus labiatus (Schubert, 1905), Torrente Stirone (IRSNB P 9781). O–P. Melanonus paralyconus Schwarzhans, 1986, Mondovi, Madonna della Neve (IRSNB P 9782– P 9783). Q–R. Melanonus triangulus (Robba, 1970), Costa Vescovato (IRSNB P 9784–P 9785). S. Gadiculus argenteus Guichenot, 1850, Torrente Stirone (IRSNB P 9786). 1 = ventral view; 2 = inner view. Scale bars = 1 mm.