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

Type locality: Eperkés-hegy, Bakony Mts, Hungary. Description: Small pentalobate cups with five wide interradial dorsal lobes. Interradial projections very low. External surface covered with nodes. RR very low. Sutures between RR clearly visible. Radial facets wide, outward sloping to subvertical. Each facet is characterized by two articular surfaces: one aboral and one adorai. Aboral surface subvertical, small, crescent-shaped, showing a wide ligament fossa with a small ligament pit. Adorai surface wider and subhorizontal, characterized by two rectangular interarticular ligament fossae separated by the axial canal and by two subcircular muscle fossae which in turn separated by a radial groove. Aboral surface separated from adorai one by a transverse fulcral ridge. Ventral cavity small and deep with evident radial grooves, pentagonal in outline. Interradial lobes bowl-shaped, very wide and distinct, covered with grains. Dorsal side deep, subcircular in outline, located among the interradial lobes. Text.fig. 4 - Gammarocrinites bakonicus sp. n, reconstruction of a cup (x 10). a, dorsal view; b, lateral view; c, ventral view Remarks: Our specimens are of small size as most of the other Upper Jurassic gammarocrinitid species. Some even smaller cups were also found, probably representing juvenile specimens (NS 6/ 462); these have bowl-shaped interradial lobes very distinct from the cup, in contrast to the wider specimens which have relatively less prominent interradial lobes. The cups figured by Zitt (1974, pl. IV, figs. 7-12) as G. pentagonus (JAEKEL, 1891) are somewhat similar to ours but their interradial lobes are less prominent and their radial facets are subhorizontal. The specimens figured by Arendt (1974, pl. X, figs. 1-3) as Sclerocrinus nonpolitus ARENDT, 1974 differ mainly by their smaller interradial lobes.