Euthyroididae Levinsen, 1909

Colony erect, branching, attached by rhizoids. Branches flexible, weakly calcified, unilaminar; calcification gymnocystal, imperforate. Long narrow kenozooids on margins of branches. A small costal field proximal to orifice, in some forms vestigial, visible only as a sutural line in the calcification. Orifice rounded to semicircular with concave proximal margin. No spines or avicularia. Ovicells often in groups, hyperstomial, prominent, with a pair of windows in the ectooecium.

This family includes the genus Euthyroides.

 Euthyroides episcopalis A colour photograph by Karen Gowlett-Holmes is available.

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Edited by Phil Bock
Modified on 20th April 2001
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