Remember the five classes of vertebrates 1
The way to remember the five sub-groups of vertebrates is to think of the different types of skin coverings.
Thinking of:
Fur
Feathers
Dry scales
Wet scales
Moist skin
brings to mind the different sub-categories:
Fur = mammal

Feathers = bird

Dry scales = reptile

Wet scales = fish

Moist skin = amphibian
