Turtles are reptiles of the order Testudines characterized by a special bony or cartilaginous shell developed from their ribs and acting as a shield. “Turtle” may refer to the order as a whole or to fresh-water and sea-dwelling testudines. The order Testudines includes both extant and extinct species.
“Behold the turtle. He makes progress only when he sticks his neck out.” —James Bryant Conant
“Behold the turtle. He makes progress only when he sticks his neck out.” —James Bryant Conant
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