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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:
Cupressocrinites FF405
Cupressocrinites FF404
Cupressocrinites FF379
Cupressocrinites FF380
Cupressocrinites p289
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 24 HL39
Cupressocrinites sp. MAD, Ureš et al. (1999): nevyobrazeno, fotografováno HL42
Cupressocrinites sp. M HL45
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 25 HL40
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 23 HL38
Cupressocrinites sp. M HL44
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 21 HL36
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 22 HL37
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 20 HL35
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 18 HL32
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 19 HL34
Cupressocrinites sp. MUreš et al. (1999), Pl. 1, fig. 15 HL33
Cupressocrinites sp. MAD, Ureš et al. (1999): nevyobrazeno, fotografováno HL41
Cupressocrinites sp. MAD, Ureš et al. (1999): nevyobrazeno, fotografováno HL43
Cyathocrinus FF458
Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]