To the best of my knowledge, Aves is a class. (Though taxonomy is fickle at best, taxa being constantly restructured and reevaluated.) You might mean the subclasses Paleognathae and Neognathae, though these too are nowadays considered superorders, of the subclass Neornithes, rather than subclasses themselves.
Aves is all.
Mammalia Aves (birds) Reptilia Amphibia Insecta
Mammalia Aves (birds) Reptilia Amphibia Insecta
Myxini, Cephalaspidomorphi, Chondrichthyes, Osteichthyes, Amphibia, Reptila, Aves, Mammalia
The crinoid stalks and blastoid heads are the common fossils that best distinguish the classes of birds and reptiles. They classify birds to class aves and reptiles to the class reptilia.
There are actually eight: Myxini, Cephalaspidomorphi, Chondrichthyes, Osteichthyes, Amphibia, Reptila, Aves, Mammalia
Characteristics of Aves are as follows : 1) Aves are oviparous, i.e., lay eggs 2) Aves do not have mammary glands. 3) Body of Aves are covered with feathers. 4) Aves do not have any teeth 5) Aves do not have cutaneous glands
There is no phylum Aves: Aves is a Class. Birds are the only members of the class Aves.
1) Aves are oviparous, i.e., lay eggs 2) Aves do not have mammary glands. 3) Body of Aves are covered with feathers. 4) Aves do not have any teeth 5) Aves do not have cutaneous glands
Main Characteristics of Aves are as follows : 1) Aves are oviparous, i.e., lay eggs 2) Aves do not have mammary glands. 3) Body of Aves are covered with feathers. 4) Aves do not have any teeth 5) Aves do not have cutaneous glands
1) Aves are oviparous, i.e., lay eggs 2) Aves do not have mammary glands. 3) Body of Aves are covered with feathers. 4) Aves do not have any teeth 5) Aves do not have cutaneous glands
No, there are no birds that are mammals. These are two completely different classes of the animal kingdom. Birds are class aves, mammals are class Mammalia.