Peribolocrinidae Dubatolova, 1971

Głuchowski, Edward, Casier, Jean-Georges & Olempska, Ewa, 2006, Crinoid and ostracod succession within the Early-Middle Frasnian interval in the Wietrznia quarry, Holy Cross Mountains, Poland, Acta Palaeontologica Polonica 51 (4), pp. 695-706 : 701

Family Peribolocrinidae Dubatolova, 1971

Peribolocrinus sp. ( Fig. 3T ).—The columnals have smooth and straight latus. The articular facet is slightly concave in the central part and covered with moderately thin culmina. The lumen is medium−sized, circular. The columnals are similar to those of Peribolocrinus paludatus ( Dubatolova, 1964) described from Lochkovian Krekov Beds of the Kuznetsk Basin, Russia ( Dubatolova 1964), but differ in having coarser culmina, relatively smaller lumen and smooth, straight latera.

Cycloocetocrinus sp. ( Fig. 3U ).—The columnals have straight and smooth latus. The articular facet is flat and covered completely with numerous, dichotomous and thin culmina. The lumen is small to medium−sized, circular. The columnals resemble those of Cycloocetocrinus scabiosus Dubatolova, 1980 described from Eifelian Sokol Beds of the Altai, Russia ( Dubatolova 1980), but differ in having smooth latus, without ornamentation. Family Tantalocrinidae Le Menn, 1985 .

Tantalocrinus sp. ( Fig. 3W ).—The columnals have straight and smooth latus. The articular facet is flat and bordered by narrow crenularium composed of straight or dichotomous, moderately thin culmina. The lumen is very wide and circular. Some better preserved specimens display thin claustrum constricting axial canal. The columnals are most similar to those of Tantalocrinus scutellus Le Menn, 1985 reported from Givetian Lanvoy and Kerbélec Formations of the Armorican Massif, France ( Le Menn 1985), as well as from Givetian Skały Beds (upper part) and Laskowa Góra Beds of the Holy Cross Mountains ( Głuchowski 1993), but differ in lacking ornamented latus.

Figures

Fig. 3. Early–Middle Frasnian crinoids from the Wietrznia Ie section, Holy Cross Mountains. A, B. Platycrinites sp. A. GIUS−4−404/2, sample Ie−66, articular facet with very weakly developed fulcrum. B. GIUS−4−404/3, sample Ie−66, articular facet with marginal culmina. C, D. Haplocrinites sp. C. GIUS−4−404/5, sample Ie−48, theca from A−ray side. D. GIUS−4−404/6, sample Ie−48, theca from E−ray side. E. Cupressocrinites sp., GIUS−4−404/8, sample Ie−19. F. Floricrinus sp., GIUS−4−404/6, sample Ie−66. G. Anthinocrinus wenjukowi Yeltyschewa in Yeltyschewa and Stukalina, 1977, GIUS−4−404/15, sample Ie−34. H. Marettocrinus kartzevae (Yeltyschewa and Dubatolova in Dubatolova and Yeltyschewa, 1961), GIUS−4−404/10, sample Ie−19.I. Laudonomphalus humilicarinatus (Yeltyschewa in Dubatolova and Yeltyschewa, 1961), GIUS−4−404/7, sample Ie−19. J. Kstutocrinus sp., GIUS−4−404//13, sample Ie−66. K. Schyschcatocrinus multiformis Głuchowski, 1993, GIUS−4−404/16, sample Ie−19. L. Schyschcatocrinus delicatus Głuchowski, 1993, GIUS−4−404/14, +