Is a Turtle Shell Really Modified Ribs?

It’s thought that the evolution of turtles
A turtle shell is not a shell at all but is made up of specially evolved ribs.

Friends of Animals Why turtles are in shell shock - Friends of Animals

Box Turtles Need Our Help

Turtles Articles

How the turtle got its shell through skeletal shifts and muscular origami

Turtle in the Gap Answers in Genesis

Biology Articles

Fact Checks Archive, Page 238

Curious about turtles? The shelled reptile is easy to observe. - The Washington Post

Sheila Articles

Fact Checks Archive, Page 238

How the turtle got its shell