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The calyptoblastea is an order of hydrozoa. They are marine colonial forms in which the perisac is extended to form hydrothecae around the hydranths and gonothecae around the blastostyles.
 Research Calyptoblastea
Obelia is a member of the order of Calyptoblastea.
Research Obelia
Sertularia is a member of the order Calyptoblastea.
Research Sertularia
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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