A scaly exoskeleton and a bony endoskeleton
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The question is incomplete. So, I am assuming that the question is 'Which animal has a scaly exoskeleton and a bony endoskeleton'.
The correct answer is - Class Pisces - Osteichthyes.
'Pisces' is the name of a class belonging to the Vertebrata sub-phylum of the Chordata Phylum. Therefore, they have the characteristics that belong to both these groups apart from having specialized adaptations.
The species belonging to the Class Osteichthyes of Pisces have a scaly exoskeleton and a bony endoskeleton.
The class Osteichthyes includes the ray-finned fish that belong to the class or subclass, Actinopterygii that includes the bony fishes. It includes the marine-freshwater fishes or the brackish water fishes.
The exoskeleton is made up of cycloid, ganoid, or ctenoid scales and the endoskeleton is bony.
The correct answer is - Class Pisces - Osteichthyes.
'Pisces' is the name of a class belonging to the Vertebrata sub-phylum of the Chordata Phylum. Therefore, they have the characteristics that belong to both these groups apart from having specialized adaptations.
The species belonging to the Class Osteichthyes of Pisces have a scaly exoskeleton and a bony endoskeleton.
The class Osteichthyes includes the ray-finned fish that belong to the class or subclass, Actinopterygii that includes the bony fishes. It includes the marine-freshwater fishes or the brackish water fishes.
The exoskeleton is made up of cycloid, ganoid, or ctenoid scales and the endoskeleton is bony.
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