Testudines
Testudines include all shelled reptiles, such as the African spurred tortoise (Geochelone sulcata) that lives at the southern edge of the Sahara Desert. It is the third-largest tortoise in the world.
Source
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"OpenStax College, Reptiles. October 17, 2013."
http://cnx.org/content/m44689/latest/Figure_29_04_10.jpg
OpenStax CNX
CC BY 3.0.
