Exoskeletons have evolved independently many times; 18 lineages evolved horny scales.
2.
The forelegs are covered in enlarged squarish or pointed horny scales, particularly on the front.
3.
The hindlimbs are rather club-shaped, the anterior margins and anterior region of their heels bearing enlarged horny scales.
4.
In young pacas, the skin is covered with horny scales about in diameter; perhaps these scales have a protective function against smaller predators.
5.
To penetrate the dragon's horny scales, he would have needed a harder steel, Olson says-a steel very much like Ferrium C69 . Olson also claims that the heat and corrosion-resistant properties of C69 would have helped it withstand the dragon's fiery breath and survive its acid blood.
मोबाइल