Turtles have roamed the Earth since the Triassic Period over 200 million years ago. A new study about their evolution, published in iScience, shows how the scales on turtles' heads can teach us more ...

In most vertebrates, skin appendages such as hair, feathers, or scales originate from placodes—small, specialized skin regions whose spatial organization is controlled by well-conserved genetic ...

In vertebrates, the formation of feathers, hair, and scales is typically governed by molecular genetic factors. However, crocodile head scales are an exception, as they form through a purely ...

Serpentine-necked, four-flippered plesiosaurs were among the most successful marine predators in the time of dinosaurs. A ...

Add Yahoo as a preferred source to see more of our stories on Google. Most of us have probably heard the symbolic tale of the race between the slow and steady tortoise and the fast, but overconfident, ...

Learn about the unique way turtles create their scales and how it’s revealing an ancient evolutionary link to dinosaurs, crocodiles, and birds. Turtles have roamed the Earth since the Triassic Period ...

A study shows that turtles use both genetic signals and mechanical forces to form the scales on their heads, revealing a shared heritage with crocodiles and dinosaurs. In vertebrates, the formation of ...