How did the turtle get its shell?

A study of a 260-million-year-old fossil could help settle a debate about an evolutionary novelty.
A study of a 260-million-year-old fossil could help settle a debate about an evolutionary novelty.

Ask Dr. Jenn: What Is My Turtles Shell Made Of and Why Is It Shedding?

Why did turtles evolve to be such slow land creatures and what might have they evolved from? - Quora

What was the first turtle to evolve a shell? - Quora

Turtles & Tortoises Information & News Archives - Page 20 of 22 - Reptiles Magazine

How the Turtle Cracked Its Shell

How did the turtle get its shell? Fossil discovery gives us a clue

Eons, How the Turtle Got Its Shell, Season 1, Episode 33

Eastern box turtle Smithsonian's National Zoo and Conservation Biology Institute

Creature feature: The more vulnerable spiny softshell turtle

Turtle shells might not have evolved for protection, say scientists

Turtle in the Gap Answers in Genesis