Guenther’s marsupial frogs have a full set of teeth, defying evolutionary theory. This adult specimen, small enough to fit in your palm, is from the University of Kansas Museum of Natural History.

The marsupial frog G. guentheri didn't have lower teeth, then "boom, around 5 to 15 million years ago, it got them ... ," said John Wiens, who authored a recent study on the phenomenon.

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.

Do frogs have teeth? Only one species of frog known to science has true teeth on both the upper and lower jaws. It’s a large marsupial frog, Gastrotheca guentheri, and it was first described ...

Researchers have confirmed that an elusive frog species actually has true teeth on its lower jaw, making it the only one out of 7,000 living frog species to have them today.

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.

The Gastrotheca guentheri is the strangest frog in the world. 200 million years ago it had a full mouth of teeth. The lower teeth evolved away, then suddenly reappeared millions of years later. It ...

Most frogs have teeth on their upper jaws, which may have made the re-evolution in the tree frog, known as Gastrotheca guentheri, easier, Dr. Wiens said. “They already had teeth in the upper jaw, so ...

This fossil helps us understand how marsupial lions evolved. ... Prehistoric Marsupial Lion Wakaleo Schouteni Ambushed Prey From Treetops With Blade-like Teeth. Published Dec 08, ... frogs, birds ...