Cornified scales of reptiles increased their capacity to live in terrestrial environments. The stratum corneum is very thin, with little keratin. Skin is used for gas exchange. Thick keratin layer ...

Cornified scales of reptiles increased their capacity to live in terrestrial environments. The stratum corneum is very thin, with little keratin. Skin is used for gas exchange. Thick keratin layer ...

The paper, by N. Di-Poï at University of Geneva in Geneva, Switzerland, and colleagues was titled, "The anatomical placode in reptile scale morphogenesis indicates shared ancestry among skin ...