How the turtle got its shell; the evolution of the turtle body plan. User an_ony_mouse, in the /r/Stuff subreddit, 26 Jun 2015
How the turtle got its shell; the evolution of the turtle body plan. User lromaine, in the Reddit Science subreddit, 26 Jun 2015
A Middle Triassic stem-turtle and the evolution of the turtle body plan | New turtle fossils shed new light on evolution of its shell User Sulde, in the Reddit Science subreddit, 24 Jun 2015