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Major Subgroups of Bryozoa


Class: Stenolaemata


Geological Range: Ordovician - Recent


Description: Calcified marine bryozoans. Cylindrical zooids, which continue to grow throughout the life of the colony. Tentacle extrusion in living forms is brought about by muscular action forcing fluid into the basal part of the zooid, displacing the tentacles out of the orifice.


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Author: Luke Mander
Last updated: 20.11.05
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