Under Dollo's Law, structures lost from evolution cannot be regained in the same form A species appears to have teeth on its lower jaw when frogs lost them millions of years ago Researchers confirmed ...

Just one species of frog, out of more than 7,000 living today, has true teeth in its lower jaw, report researchers. The culprit, a large marsupial frog named Gastrotheca guentheri, has puzzled ...

In a new study, biologists laid to rest a century-old debate by confirming that a single species of frog, out of the more than 7,000 living today, has true teeth on its lower jaw. In a new study, ...

In a new study published in Evolution, biologists laid to rest a century-old debate by confirming that a single species of frog, out of the more than 7,000 living today, has true teeth on its lower ...