Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 15. 1992. (Budapest, 1992)
Occurrence: The genus is known only from the Tithonian deposits of Saarnberg (Czechoslovakia) and Crimea (USSR), from Berriasian-Valanginian deposits of Crimea and from Hauterivian deposits of Isère (France). According to Zitt (1974), all the species described by Remes and Bather (1902) are synonymous thus the genus is composed of its type species, P. holopiformis (REMES, 1902) only . Proholopus holopiformis (REMES, 1902) Pl. I, Figs. 1,2; Text-fig. 3 1902 Eugeniacrinus holopiformis n.sp. - Remes and Bather, p. 203, pi. 19, fig. 4. 1902 Eugeniacrinus cupuliformis n.sp. - Remes and Bather, p. 203, pi. 19, fig. 7. 1902 Eugeniacrinus tithonius n.sp. - Remes and Bather, p. 204, pi. 19, fig. 8. 1907 Proholopus holopiformis (REMES) - Jaekel, p. 292, fig. 17. 1961 Proholopus holopiformis (REMES) - Rasmussen, p. 220, pi. 32, fig. 3. 1974 Proholopus holopiformis (REMES) - Arendt, p. 98 , pi. 5, figs 6-10; pi. 6, figs. 1-16. 1974 Proholopus holopiformis (REMES) - Zitt, p. 28, pi. 5, figs. 1-12. Textfig. 3 - Proholopus holopiformis (REMES, 1902) reconstruction of a cup (x 10). a, dorsal view; b, lateral view; c, ventral view Description: Small, funnel-shaped cups, commonly sloping, with five RR and very low interradial projections. RR high and thin in the upper part and squat in the lower part, possessing a dorsal longitudinal ridge. External walls smooth and unornamented. Sutures between RR clearly visible. Radial facets small and narrow with a very small subvertical aboral surface and a wider, subhorizontal adorai one. Aboral surface crescent-shaped and flat having a small ligament pit. Adorai surface shows two relatively large and circular muscle fossae divided by a radial groove and an axial canal. A fulcral ridge clearly separates the aboral surface from the adorai one. Interradial projections low and moderately wide, triangular in cross section. Ventral cavity cone-shaped, wide and deep, pentagonal in outline, possessing five radial grooves. Dorsal side small, pentagonal in outline, occupied almost entirely by a small cylindrical cavity. Remarks: Our specimens differ from P holopiformis figured by Remes and Bather (1902, pi. 19, fig. 4) in the presence of low interradial projections; from the
