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 ...

Extremes of the colour gradient of the Eastern San Antonio frog (Hyla orientalis). On the left, a specimen captured in Chernobyl inside the high contamination zone; on the right, a specimen captured ...

Scientists are studying Nectophrynoides frogs that give birth to live young. This unique reproductive method helps them ...

Evolution is the result of environmental pressures forcing species to adapt, and few environments exert pressures like the Chernobyl exclusion zone. A new study has revealed evolution in action as ...

Over the course of 500 million years, three species of poison frogs evolved to withstand a toxin they use to prevent predators from catching them. But, there’s a catch: the frogs experience a ...

LOS ANGELES - Researchers at the Smithsonian's National Museum of Natural History have stumbled upon the fossilized skull of a 270-million-year-old amphibian forebear. As per the discovery published ...

Evolution, Vol. 75, No. 12 (DECEMBER 2021), pp. 3203-3213 (11 pages) Dollo’s law of irreversibility states that once a complex structure is lost, it cannot be regained in the same form. Several ...

The development of hair was of central importance for the evolution of mammals and thus also of humans. However, the evolutionary origin of the genetic program of hair was previously unknown.

Berkeley -- Picky female frogs in a tiny rainforest outpost of Australia have driven the evolution of a new species in 8,000 years or less, according to scientists from the University of Queensland, ...

Paleontologists with the Smithsonian National Museum of Natural History have discovered a previously unknown prehistoric species — a 270 million-year-old amphibian with wide eyes and a cartoonish grin ...

GAINESVILLE, Fla. --- Scientists have long known that frogs are oddballs when it comes to teeth. Some have tiny teeth on their upper jaws and the roof of their mouths while others sport fanglike ...