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Phylum 26, Echinodermata
Echinus means spiny and derma means skin;
We are prickly without but all mushy within;
Our parts are spread out in fives, like a star;
We are called pentapartite, and that's what we are.

This entry is located in the following unit: Zoology Phyla in Poetic Rhyming + (page 2)