List the major classes of subphylum Vertebrata (Craniata), and give an example of each.

The classes of veterbrata subphylum are

Class Aves which includes the birds like parrots, dove e.t.c.

Class Amphibians which include frog, toads e.t.c.

Class mammalian which include Human beings, chimpanzee

Class Reptilia which consist of the reptiles like snake, lizards e.t.c.

Class Agnatha (jawless fishes) e.g lamprey, hag fish e.t.c.

Class Chondrichthyes (cartilaginous fishes) e.g sharks, chimaera e.t.c

Class Osteichthyes (bony fishes) e.g clown fishes, lobe- finned fishes and the ray-finned fishes.

Explanation:

The subphylum vetebrata consist of group of organisms that have

Endoskeleton framework in the body.

They have veterbral column

Presence of cranial.

The have notochord that does not extend beyond the brain.

Their cranium is house in a brain case

They have well developed head.

Chambered heart

Nervous system e.t.c.

The classes include;

Class Aves which includes the birds like parrots, dove e.t.c.

Class Amphibians which include frog, toads e.t.c.

Class mammalian which include Human beings, chimpanzee

Class Reptilia which consist of the reptiles like snake, lizards e.t.c.

Class Agnatha (jawless fishes) e.g lamprey, hag fish e.t.c.

Class Chondrichthyes (cartilaginous fishes) e.g sharks, chimaera e.t.c

Class Osteichthyes (bony fishes) e.g clown fishes, lobe- finned fishes and the ray-finned fishes.

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