Studies of altitudinal gradients in species richness have increasingly replaced the latitudinal gradient as a model template for large-scale gradient studies 9. Altitudinal gradients encompass several ...

Now, in a new study, Milinkovitch and his team reported that the polygonal head scales form due to the growth and compression of skin, which creates a self-organizing pattern of folds. 2 These ...

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 ...