She added, "The fossil reveals that the morphology of tadpoles has remained almost unchanged over the last 160 million years.

First, tadpoles grow back legs, then front ones. Skin grows over the gills they use to breathe underwater. Their tails shrink and eventually disappear.

The oldest recorded fossils of adult frogs date back to around 217 million years ago, in the Late Triassic Period, but the ...

Tadpoles are to frogs as oranges are to apples. They are so very different, University of Cincinnati Professor Daniel Buchholz said. In his biology lab, he and his students are using a National ...

Eggs of high-elevation frogs may be 30 percent larger than those of lowland females, giving tadpoles a head start. Eggs and tadpoles of mountain frogs have developed resistance to genetic damage ...

Some tadpoles have not grown into frogs this year due to the poor weather Tadpoles have decided not to turn into frogs because of this year's bad weather. The young amphibians usually begin their ...

About 30 adult northern pool frogs per year were flown over from Sweden between 2005 and 2008, Mr Foster said. Conservation workers released the tadpoles into the ancient pingo ponds - rare ponds ...