About 310 million years ago, the earliest known proto-turtles emerged, featuring some but not all characteristics of modern turtles. Crucially, these ancient reptiles developed protective shells ...

Growing more than 10 feet (3 meters) long, Protostega was among the largest turtles to ever live. Unlike most turtles, whose shells are made of expanded and fused bones that form a relatively ...

Green sea turtles are adjusting their nesting habits in response to rising global temperatures. Individual females are laying their eggs earlier in the season to cope with warmer conditions ...