Scientists Discover That Turtles Began Living in Shells Much

Unique among Earth’s creatures, turtles are the only animals to form a shell on the outside of their bodies through a fusion of modified ribs, vertebrae and shoulder girdle bones. The turtle shell is a unique modification, and how and when it originated has fascinated and confounded biologists for more than two centuries.

prodimage.images-bn.com/lf?set=key%5Bresolve.pixel

Sea turtle - Wikipedia

Learning about aging from turtles and other cold-blooded critters

Discovery of lonely tortoise doubles known members of Galapagos species

Newdesk Search, Page 312

Newdesk Search, Page 312

Loggerhead Turtle

News Releases, Page 125

カメの甲羅の起源

Sea Turtle Protection in the Pacific

Common And Rare Types Of Shells Found On The Beach

Scientists Discover That Turtles Began Living in Shells Much Earlier Than Once Thought

10 Things to Know About Sea Turtles - Ocean Conservancy

The remarkable tropical life of the Hawksbill sea turtle

Scientists discover evolutionary link to modern-day echinoderms