urchins

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1-7 of 7 possibilities

Definition/MeaningWord/Phrase
sea urchins and sand dollars class Echinoidea , Echinoidea
radially symmetrical marine invertebrates including e.g. starfish and sea urchins and sea cucumbers Echinodermata , phylum Echinodermata
flat sea urchins Exocycloida , order Exocycloida
heart-shaped sea urchins order Spatangoida , Spatangoida
flattened disklike sea urchins that live on sandy bottoms sand dollar
hard outer covering as of some amoebas and sea urchins test
tentacular tubular process of most echinoderms (starfish and sea urchins and holothurians) having a sucker at the end and used for e.g. locomotion and respiration tube foot
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