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

"Long Trench" from which the crinoids were collected. It is an artificial excavation, starting near the road and extending up the hillside on the east. The basal 4 m thick part of the exposure (Pálihálás Limestone Formation) consists of alternating brownish red nodular limestone, thinner clayey-marly beds and crinoidal limestone lenses (Text-fig. 2). The clayey beds, increasing in thickness upsection, yielded the most abundant crinoid fauna. In the deeper part of the section, manganese oxide was observed both as impregnation and as a film on the fossils. The limestone is biomicritic wackestone and packstone in thin sections. The most common micro- and megafossils are crinoids but other echinoderms, cephalopods, brachiopods and solitary corals are also frequent. A biostratigraphical subdivision based on microfossils was given by I. Nagy and E. Tardiné Filácz (in Császár 1988): the lowermost one meter of the section belongs to the Oxfordian, the remaining part is Kimmeridgian but only the uppermost 50 cm represents the Upper Kimmeridgian. The Pálihálás Limestone is overlain by an approximately 3 m thick member of the Szentivánhegy Limestone Formation which has been formerly called as "Tithonian Hierlatz Limestone". In its lowermost part, the nodular character of the limestone disappears but intercalating clayey beds or lenses persist to higher levels. The lower part is light red but the colour changes into grayish-white upward. The biodetrital content suddenly increases upsection. In thin section, the biomicritic wackestone texture is characteristic, intraclasts are also present. The most frequent micro- and macrofossils are the crinoid ossicles; some samples consist almost exclusively of saccocomid skeletal elements. Cephalopods and brachiopods were also found. According to Császár (1988), in the lower part of the trench this formation ranges into the Upper Kimmeridgian and Lower Tithonian substages. The section is crossed by a disturbed zone which delimits the "Tithonian Hierlatz Limestone". Stratigraphically higher parts of the section are beyond the scope of our investigations though other crinoid-bearing Upper Jurassic rocks are also exposed. The studied samples were collected from the Pálihálás Limestone Formation (see Text-fig. 2). SYSTEMATIC PALEONTOLOGY Subelassis^T/CL/Ly47M ZITTEL, 1879 Order DADOCRINIDA NICOSIA, 1992 Suborder DADOCRININA NICOSIA, 1992 Family PROHOLOPIDAE ZlTT, 1974 Genus Proholopus JAEKEL, 1907 Type species: Eugeniacrinus holopiformis REMES, 1902 Diagnosis: Small, funnel-shaped cups with five RR, low interradial projections, very wide and deep ventral cavity, with or without dorsal cavity. Radial facets narrow and subhorizontal.