Clay, oil, and deep time do not usually leave much behind. Skin disappears. Cartilage collapses. Proteins break apart. Yet a small reptile that lived about 289 million years ago has done something ...

From a to d, showing outer skin, showing the corneous bands in the skin, the segmented skeleton with cartilages, and reconstructed parts of skeleton in colour showing the preserved parts of the rib ...

Your lungs are working overtime right now — probably without you even thinking about it. But the system powering every single breath you take? It’s nearly 290 million years old. A jaw-dropping fossil ...