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Lab10.Echinodermata

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Phylum ECHINODERMATA<br />

Classe Blastoidea<br />

Echinodermi con morfologia<br />

generale simile a quella dei<br />

crinoidi.<br />

- Simmetria pentamera<br />

- Teca compatta globulareovoidale<br />

(a bocciolo di rosa)<br />

- Peduncolo (colonna) sessili<br />

- 5 solchi ambulacrali si<br />

dipartivano dalla bocca centrale<br />

- Dalla teca si dipartivano corte<br />

braccia.<br />

Ordoviciano - Permiano

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