Most frogs look pretty benign, with round and friendly faces, but don’t be fooled. Below the surface, some sport faux fangs, helmet-like fortifications and even venom-delivering spikes. Now US researchers have a better idea of how these evolved and why. A team from Florida Museum of Natural History used 3D data to study skull shape … Continue reading Why some frogs have crazy heads
A new theory of how teeth get their shape could help trace the evolutionary relationships between humans and other hominoid species. Stephen Fleischfresser reports.