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Crinoidea (Crinoids)

      Crinoids are marine animals that make up the class Crinoidea of the echinoderms (phylum Echinodermata). Crinoidea comes from the Greek word krinon, "a lily", and eidos, "form". They live both in shallow water and in depths as great as 6,000 meters. Sea lilies refer to the crinoids which, in their adult form, are attached to the sea bottom by a stalk. Feather stars or comatulids refer to the unstalked forms. Crinoids are characterized by a mouth on the top surface that is surrounded by feeding arms. They have a U-shaped gut, and their anus is located next to the mouth. Although the basic echinoderm pattern of fivefold symmetry can be recognized, most crinoids have many more than five arms. Crinoids usually have a stem used to attach themselves to a substrate, but many live attached only as juveniles and become free-swimming as adults. There are only a few hundred known modern forms, but crinoids were much more numerous both in species and numbers in the past. Some thick limestone beds dating to the mid- to late-Paleozoic are almost entirely made up of disarticulated crinoid fragments.

Source: http://en.wikipedia.org/wiki/Crinoidea
lilijice
Img. 81:
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999Ureš et al. (1999), Pl. 1, fig. 11 HL24
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999Ureš et al. (1999), Pl. 1, fig. 14 HL27
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999Ureš et al. (1999), Pl. 1, fig. 16 HL28
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999 HL31
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999Ureš et al. (1999), Pl. 1, fig. 12 HL25
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999Ureš et al. (1999), Pl. 1, fig. 13 HL26
Fleckenbergocrinus moravicus Ureš - Le Menn - Hladil, 1999 HL30
Flexibilia von Zittel, 1895 CW1070
Flexibilia von Zittel, 1895 CW1071
Gissocrinus cyrili JH342
Gissocrinus involutus JH352
Gissocrinus involutus JH320
Gissocrinus involutus JH344
Gissocrinus involutus RP26
Gissocrinus involutus PP777
Gissocrinus involutus JH357
Gissocrinus prantli p5261
GoniostathmusUreš et al. (1999), Pl. 1, fig. 27 HL47
GrisetocrinusUreš et al. (1999), Pl. 1, fig. 29 HL49
Grisetocrinus uresi Ureš - Le Menn - Hladil, 1999 HL11
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]