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Keratoza
Keratoza, the group of horny sponges including those in which the skeleton is formed of fibres of spongin (or keratode). It includes the ordinary sponge of commerce. [Sponge.]
Keratoza, the group of horny sponges including those in which the skeleton is formed of fibres of spongin (or keratode). It includes the ordinary sponge of commerce. [Sponge.]