Sentence Examples with the word ribbon-shaped

In addition to these, there exists in the interior of the dorsal valve of some genera a variously modified, thin, calcified, ribbon-shaped skeleton for the support of the ciliated arms, and the form of this ribbon serves as one of the chief generic characters of both recent and extinct forms. This brachial skeleton is more developed in some genera than in others.

Many of them are long thread-shaped or ribbon-shaped animals, more or less cylindrical in transverse section.