Our bones did not begin deep inside the body. They started in the skin, not long after the first complex animals took shape.

As a graduate student at the Free University of Brussels nearly 20 years ago, Athanasia Tzika analyzed the genomes of several animals to better understand their diversity. During this time, the ...

In corn snakes, certain lineages have red, yellow or pink colours, and their dorsal spots can merge or form stripes. In many animals, skin colouration and its patterns play a crucial role in ...

Richard O. Prum is in the Department of Ecology and Evolutionary Biology and at the Peabody Museum, Yale University, New Haven, Connecticut 06511, USA. Read the paper: Triassic diapsid shows early ...