Gymnostomaceae

From LoveToKnow 1911

GYMNOSTOMACEAE, an order of Ciliate Infusoria, characterized by a closed mouth, which only opens to swallow food actively, and body cilia forming a general or partial investment (rarely represented by a girdle of membranellae), but not differentiated in different regions. With the Aspirotrochaceae it formed the Holotricha of Stein.

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