Fold the right corner upward, just past the edge of the bill. On the left side, pinch the edges upwards to start shaping the ...

Turtle shells are unique adaptations, not least because the shoulder blade sits inside the ribcage unlike all other vertebrates. Now, a new study of developing turtle embryos suggests how these ...

Odontochelys was a turtle in a half-shell, whose armour had a lower half (a plastron) but not a top one (a carapace). Its discoverers suggested that it was a sign that turtles evolved via a ...