Tethioidea
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Tethyodea — Te thy*o de*a, n. pl. [NL., fr. Tethys + Gr. e i^dos form.] (Zo[ o]l.) A division of Tunicata including the common attached ascidians, both simple and compound. Called also {Tethioidea}. [1913 Webster] … The Collaborative International Dictionary of English
