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Bryozoans

      The Bryozoa, also known as Ectoprocta or commonly as moss animals, are a phylum of aquatic invertebrate animals. Typically about 0.5 millimetres (0.020 in) long, they are filter feeders that sieve food particles out of the water using a retractable lophophore, a "crown" of tentacles lined with cilia. Most marine species live in tropical waters, but a few occur in oceanic trenches, and others are found in polar waters. One class lives only in a variety of freshwater environments, and a few members of a mostly marine class prefer brackish water. Over 4,000 living species are known. One genus is solitary and the rest colonial. The phylum was originally called "Polyzoa", but this term was superseded by "Bryozoa" in 1831. Another group of animals discovered subsequently, whose filtering mechanism looked similar, was also included in "Bryozoa" until 1869, when the two groups were noted to be very different internally. The more recently discovered group were given the name Entoprocta, while the original "Bryozoa" were called "Ectoprocta". However, "Bryozoa" has remained the more widely used term for the latter group.

Source: en.wikipedia.org/wiki/Bryozoa
Marcusodictyon exspectansMergl (1984b), Pl. II, fig. 1 MM216
Marcusodictyon exspectansMergl (1984b), Pl. II, fig. 3 MM218
Marcusodictyon exspectansMergl (1984b), Pl. I, fig. 5 MM214
Marcusodictyon exspectansMergl (1984b), Pl. II, fig. 6 MM219
Marcusodictyon exspectansMergl (1984b), Pl. I, fig. 4, Pl. II, fig. 4 MM213
Marcusodictyon exspectansMergl (1984b), Pl. I, fig. 1, Pl. II, fig. 5 MM210
Monotrypa disculus (Počta, 1902) KP751
Monotrypa disculus (Počta, 1902) KP754
Monotrypa pragensis XA731
Monotrypa pragensis CW873
Monotrypa pragensis YA296
Monotrypa pragensis YA298
Monotrypa p5890
Monotrypa PB1054
Monotrypa PB1055
Monotrypa YA318
Monotrypa YA936
Monotrypa p499
Monotrypa p771
Monotrypa YA317

Virtual museum of the Czech Geological Survey, www.geology.cz, (C) Czech Geological Survey, 2011, v.0.99 [13.12.2011]