Underbite regained: Species feared extinct is the only frog with true teeth on its lower jaw

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.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/11/211110104550.htm