Publication details

Paleogene fish otoliths (Teleostei) from the Subsilesian and Zdanice units in Moravia


BRZOBOHATÝ Rostislav BUBÍK Miroslav

Year of publication 2019
Type Article in Periodical
Magazine / Source Bulletin of Geosciences
MU Faculty or unit

Faculty of Science

Keywords Teleostei; otoliths; Eocene; Oligocene; Outer Flysch Carpathians
Description The Oligocene fish otolith fauna from the Subsilesian Unit of Western Carpathians in Moravia is described for the first time. The otoliths were found in pebbly mudstones and slumps interfingering with the Menilite Formation while hemipelagites of the formation are barren in otoliths. The otoliths represent deep-sea taxa dominated by myctophids. Two different otolith-based assemblages were distinguished: lower-slope assemblage with Vinciguerria sp., 'Phosichthys' triquetrus (Brzobohaty), 'Diaphus' alcoholicus Brzobohaty & Nolf, Oligophus moravicus (Pauca), Melanonus triangulus (Robba), Palaeogadus cf. intergerinus Daniltshenko, Coryphaenoides sp., and upper-slope assemblage with Xenodermichthys cf. senesi Nolf & Brzobohaty, Scopelarchus sp., 'Diaphus' cf. excavatus (Sulc), 'Diaphus' sp., and ?Synaphobranchidae indet. Otoliths are interpreted as in situ fauna, although the upper-slope assemblage may contain reworked specimens from the Eocene. Cutthroat eel (Synaphobranchidae) represents probably the first fossil otolith record of the family. The otolith fauna from the Subsilesian Unit can be compared with faunas of the Pouzdrany Marl, Ranzano Formation of Northern Apennines and IPM1 ecostratigraphic Zone of the Polish Carpathians. The otoliths document palaeomediterranean deep-water fish fauna strictly different from the modern Mediterranean fishes.

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