Imagine you're the kind of mollusk called a chiton tuhn). You have a sort of head, a mouth, but no eyes. Your body is a soft, oblong lump, with no arms or legs. Your head and back are covered with...
Fish in armor
According to most scientists, the fishes that swam in the seas 430 million years ago were covered with hard, bony armor. They had no jaws like the fish of today. Their mouths were just holes in the...
Animals in armor
If you saw a pangolin you might say it looked like a pine cone with legs and a tail. A pangolin is one of the animals that is protected by armor. It's covered with scales like the scales on a pine...