Cribrimorpha

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Cribrimorpha (order Cheilostomata, suborder Anasca) A division of bryozoans in which the frontal (i.e. ventral) region of individuals is partially roofed by a network of fused, calcite spines, whose arrangement is important in classification. The division was abundant in the Cretaceous, when it appeared, and it continues to the present day.