The mystery of feather origins: how fluffy pterosaurs have reignited debate
The mystery of feather origins: how fluffy pterosaurs have reignited debate: Reconstruction Yuan Zhang When fossils of the oldest known bird, Archaeopteryx, were first discovered almost 160 years ago, the find created a puzzle that has troubled palaeontologists ever since. These fossils were celebrated for their chimera-like combination of supposedly reptilian features (such as a …