The turtle’s shell provides it with a formidable defence and one that is unique in the animal world. No other animal has a structure quite like it, and the bizarre nature of the turtle’s anatomy also ...

The turtle has been in no rush to give up the secret of its shell — but after two centuries of close study, scientists are filling in the story of a structure unique in the history of life.New ...

The turtle’s shell is unique, but the evolution of the structure has been a mystery. Now Japanese scientists have figured out that the shell develops from an unusual folding process inside the egg ...

Francis Horne, a biologist who studies shell formation at Texas State University, offers this answer. The exoskeletons of snails and clams, or their shells in common parlance, differ from the ...