Sentence Examples with the word Bilaminar

The body-wall is extensively calcified in the Cyclostomata and in most Cheilostomata, which may form elegant network-like colonies, as in the unilaminar genus Retepora, or may consist of wavy anastomosing plates, as in the bilaminar Lepralia foliacea of the British coasts, specimens of which may have a diameter of many inches.

In Flustra and other forms belonging to this type, the zoarium is accordingly flexible, and either bilaminar or unilaminar.

The rigid Cheilostomes which have this habit were formerly placed in the genus Eschara, but the bilaminar type is common to a number of genera, and there can be no doubt that it is not in itself an indication of affinity.