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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 The phylum was originally called "Polyzoa", but this term was superseded by "Bryozoa" in 1831.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
Bryozoa Ehrenberg, 1831 YA2786
Bryozoa Ehrenberg, 1831 JK5144
Bryozoa Ehrenberg, 1831 JK5206
Bryozoa Ehrenberg, 1831 JK5198
Bryozoa Ehrenberg, 1831 JK6753
Bryozoa Ehrenberg, 1831 PB679
Bryozoa Ehrenberg, 1831 PB677
Bryozoa Ehrenberg, 1831 PB694
Bryozoa Ehrenberg, 1831 PB618
Bryozoa Ehrenberg, 1831 PB678
Bryozoa Ehrenberg, 1831 PB686
Bryozoa Ehrenberg, 1831 PB695
Bryozoa Ehrenberg, 1831 JK5782
Bryozoa Ehrenberg, 1831 JK5801
Bryozoa Ehrenberg, 1831 JK5800
Bryozoa Ehrenberg, 1831 JK5799
Bryozoa Ehrenberg, 1831 JK5792
Bryozoa Ehrenberg, 1831 JK5786
Bryozoa Ehrenberg, 1831 JK5787
Bryozoa Ehrenberg, 1831 JK5788

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