"Theonella" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus,
MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure,
which enables searching at various levels of specificity.
A genus of shallow-cupped SPONGES with a broad base in the family Theonellidae. They are characterized by ectosomal spicules dominated by phyllotriaenes.
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