For years, the oldest turtle fossils we could find had fully formed shells. Now, more primitive fossils are revealing the strange tale of how turtle shells evolved
How the turtle got its shell: Amazing fossils are solving the
Mystery of Why Turtles Have Shells Solved After 8-Year-Old Finds
Mystery fossil's real identity revealed after 132 million years
Tortoise evolution: How did they become so big?
How the Turtle Got Its Shell
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How Turtles Got Their Shells: Fossil of Extinct South African
It's Turtles All the Way Down in the Fossil Record - The New York
How the turtle got its shell: Amazing fossils are solving the