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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 The phylum was originally called "Polyzoa", but this term was superseded by "Bryozoa" in 1831.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 CW822
Bryozoa Ehrenberg, 1831 PB680
Bryozoa Ehrenberg, 1831 JP879
Bryozoa Ehrenberg, 1831 JP931
Bryozoa Ehrenberg, 1831 JP888
Bryozoa Ehrenberg, 1831 JP869
Bryozoa Ehrenberg, 1831 JP871
Bryozoa Ehrenberg, 1831 JP930
Bryozoa Ehrenberg, 1831 JP887
Bryozoa Ehrenberg, 1831 KP904
Bryozoa Ehrenberg, 1831 KP1249
Bryozoa Ehrenberg, 1831 KP1250
Bryozoa Ehrenberg, 1831 VK455
Bryozoa Ehrenberg, 1831 JK5265
Bryozoa Ehrenberg, 1831 PB689
Bryozoa Ehrenberg, 1831 JK8183
Bryozoa Ehrenberg, 1831 JK8182
Bryozoa Ehrenberg, 1831 PB681
Bryozoa Ehrenberg, 1831 PB692
Bryozoa Ehrenberg, 1831 YA3057

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