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 ...

"They show now how developmental steps [in the turtle] could have led to this initial formation" of the turtle's shell. In addition to the overt peculiarity of the turtle's shell, or carapace -- which ...

Following is a transcript of the video. Narrator: A turtle's shell is as much a part of its body as our rib cage is of ours. In fact, it is their rib cage, and their spine, and their vertebrae, and ...

The fossilized remains of a bizarre-looking reptile are giving scientists new insights into how turtles got their distinctive shells. Some 240 million years ago, this early turtle-like creature lived ...