Match each type of skin covering with the appropriate group of vertebrates. You will not use any answer more than once, and you will not have any answers left over. Tooth-like dermal scales made of enamel and dentin Hairy skin Epidermal scales made up of keratin Bony dermal scales made up of dermal bone, sometimes covered by enamel and dentin Scaleless, hairless skin Dermal "armor" made up of a tooth- like layer of enamel and dentin covering a thick layer of dermal bone .