Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 15. 1992. (Budapest, 1992)

FRAGMENTA MINERALOGICA ET PALAEONTOLOGICA 15. BUDAPEST, 1992 p. 115-137 Late Jurassic crinoids from the Eperkés-hegy (Bakony Mts., Hungary) by R. MANNI, U. NICOSIA and J. SZABÓ Abstract - This preliminary paper gives the first account on the systematic composition of the Late Jurassic crinoid faunas from the Bakony Mountains. Nine species are described in detail, one of them, Gammarocrinites baconicus sp. n. is new. The samples also indicate the presence of several additional species. INTRODUCTION Systematic data of Mesozoic crinoids from Hungary are almost completely lacking. Two papers were published on material originating from the Lower Cretaceous locality of Zirc-Bocskorhegy (Szörényi 1959, Sieverts-Doreck 1961). The first gives some useful information about hemicrinids while the second merely contains a faunal list of little use (cited also by Fülöp 1964), consistig of nomina nuda or uncertain taxa only. No information concerning Jurassic crinoids had been available previously thus this work was initiated to fill a complete gapIn the first step, only six samples were collected from the Upper Jurassic of the Eperkés-hegy to assess its crinoid fauna. Due to the limited collection, several taxa are insufficiently known, although the rock is rich in remains. This paper can be regarded as a preliminary report and it will be followed by other publications on the basis of future, more extensive and detailed collections representing the complete Upper Jurassic sequence. In spite of the low number of samples, the crinoid fauna is definitely of great interest. It includes a new species and some other peculiar elements. Comparing to coeval faunas of the Mediterranean and the northwestern European segments of the Tethyan Realm, the crinoids show both close affinities and interesting differences. The taxa described below are arranged in a systematical scheme proposed by Nicosia (1992). The frequent cyrtocrinid species (Dadocrinida sensu Nicosia 1992) are briefly described. Other species which are rare or insufficiently represented are only outlined as their identification requires additional material. Isocrinids and saccocomids have already been well known from previous descriptions therefore they are just mentioned here to give a more complete picture of the faunal composition. The figured specimens are deposited in the Palaeontological Museum of the University "La Sapienza", Rome, Italy. Additional specimens are in the collection of the Geological and Palaeontological Department of the Hungarian Natural History Museum, Budapest.