Associations to the word «Echinoidea»

Wiktionary

ECHINOIDEA, proper noun. A taxonomic class within the superclass Cryptosyringida   — the sea urchins and sand dollars.

Dictionary definition

ECHINOIDEA, noun. Sea urchins and sand dollars.

Wise words

Men govern nothing with more difficulty than their tongues, and can moderate their desires more than their words.
Baruch Spinoza