· 5. The class Osteichthyes is divided into a) the subclasses Sarcopterygii & Actinopterygii...
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· 5. The class Osteichthyes is divided into a) the subclasses Sarcopterygii & Actinopterygii b) the subclasses Crossopterygii, Dipnoi, & Actinopterygii c) the class Osteichthyes