The animal that is exclusively marine and has spines and spicules over the body is ___
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Echinoderm
Explanation:
any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin. Beginning with the dawn of the Cambrian Period (542 million to 488 million years ago), echinoderms have a rich fossil history and are well represented...
What animals have spicules?
Spicules are structural elements found in most sponges. Sponge spicules are made of calcium carbonate or silica.
In what kind of animal would you find Choanocytes and spicules?
Choanocytes are found dotting the surface of the spongocoel in asconoid sponges and the radial canals in syconoid sponges, but they comprise entirely the chambers in leuconoid sponges.
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