A Late Jurassic (Kimmeridgian–early Tithonian) fish fauna of the Eperkés-hegy (Olaszfalu, Bakony Mts., Hungary): the oldest record of Notidanodon Cappetta, 1975 and a short revision of Mesozoic Hexanchidae

Abstract

The first results of the investigation of the Late Jurassic (Kimmeridgian–early Tithonian) fish fauna from the fossil-rich Pálihálás Limestone Formation (“Long trench”, Eperkés-hegy, Olaszfalu, Hungary) are detailed here. The present study provides the first systematic faunal data of a Jurassic marine fish community from the Transdanubian Mountains. The low-diversity neoselachian fauna includes Notidanodon sp., Sphenodus sp., and indeterminate synechodontiform, possible indeterminate scyliorhinids, and further, yet indeterminate forms. Actinopterygians are represented by Caturus sp. and indeterminate actinopterygian teeth and scales. The Olaszfalu hexanchid is the most similar to Notidanodon lanceolatus; however, specific determination is not possible. The Olaszfalu record is the second Jurassic (and also the earliest) report of the genus Notidanodon, which re-dates the earliest occurrence of Hexanchidae back into the boundary of the Kimmeridgian–early Tithonian.