You may already know that slugs and snails have thousands of tiny teeth, all lined up in circular jaws. But you might not be aware that some frogs have them too. Yup ― it’s not uncommon for certain ...

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’s ...

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 ...

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, ...

Researchers analyzed CT scans of nearly every living amphibian genus to reveal that frogs have lost teeth over 20 times during their evolution, more than any other vertebrate group. Scientists have ...

Researchers studying amphibians in Asia have made an exciting discovery: a new species of frog with teeth, named Limnonectes cassiopeia, has been identified on the island of Luzon in the Philippines.

College students know senior year means hours spent working toward the future. However, for University of Dayton senior Madeline Brinkman, working toward the future meant first diving millions of ...

A fragment of upper jaw fossil from the Early Cretaceous is among the oldest examples of a toothless amphibian in the fossil record Chihiro Kai The arid valleys of Wyoming’s Cloverly Formation are ...

The audio version of this article is generated by AI-based technology. Mispronunciations can occur. We are working with our partners to continually review and improve the results. Ancient amphibians ...