
A turtle’s shell makes for a great portable home, offering a huge amount of protection to the animal living inside. But this carapace is nothing more than an evolutionary byproduct of another adaptation. The turtle shell evolved to help it burrow into the earth.
“Just like the bird feather did not initially evolve for flight,” paleontologist Tyler Lyson told the Denver Museum of Nature and Science, “the earliest beginnings of the turtle shell was not for protection but rather for digging underground to escape the harsh South African environment where these early proto-turtles lived.”
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