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lezioni 16, 17, 18 2011 zoologia.pdf - DISAT

lezioni 16, 17, 18 2011 zoologia.pdf - DISAT

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Subphylum Vertebrata<br />

I Vertebrati si suddividono in due<br />

superclassi:<br />

AGNATI (parafiletica?)<br />

• Classe Missine, animali marini predatori di<br />

invertebrati o si cibano di pesci morti.<br />

• Classe Cephalaspidomorphi Lamprede<br />

(prima comparsa di vertebre)<br />

• Ostracodermi (pesci estinti)<br />

GNATOSTOMI (monofiletica)<br />

• pesci con mandibole articolate a cerniera

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