The Eiffinger's tree frog (Kurixalus eiffingeri), found on Ishigaki and Iriomote islands in Japan, has a unique biological adaptation: its tadpoles do not defecate during their early developmental ...

A 161 million-year-old fossil, linked to a line of extinct frog-like amphibians, is the oldest tadpole ever found. By Asher Elbein The metamorphosis of a frog from baby to adult is one of nature’s ...

An artist depicts the tadpole and frog individuals of the Notobatrachus degiustoi species. The oldest known tadpole fossil, which belongs to this species, was found in the Patagonia region of ...

Frogs, like butterflies and salamanders, have what is called a "bi-phasic life cycle." They undergo metamorphosis to grow from their larval stage, as a non-reproductive tadpole that swims underwater, ...

The discovery in Patagonia shows that frogs have had a tadpole stage for at least 160 million years. Here’s how the ancient frogs compare to those of today. Tadpoles and adults of the extinct frog ...

Scientists have discovered the oldest-known fossil of a tadpole, dating back approximately 161 million years to the Middle Jurassic period Scientists have discovered the oldest-known fossil of a ...

The Aquarium of the Pacific is nurturing critically endangered mountain yellow-legged frogs before releasing them into the ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

The Eiffinger’s tree frog (Kurixalus eiffingeri), found on Ishigaki and Iriomote islands in Japan, has a unique biological adaptation: its tadpoles do not defecate during their early developmental ...

For years, we've been asking, "Which came first: the chicken or the egg?" Maybe what we should have been asking is, "Which came first: the frog or... The oldest tadpole ever found is 161 million years ...

The Eiffinger's tree frog found in Japan has a unique biological adaptation: its tadpoles do not defecate during their early developmental stages to reduce the risk of contaminating their small ...