history

The fossil was unearthed in the Jurassic system of the Mesozoic era.

As the fossil is 90 million years older than other frog fossils, it shows that frogs rapidly evolved in the earth already in the Mesozoic era. 

And the fossil was excavated in Paektho-dong of the city of Sinuiju where the fossil of Korean archaeopteryx had been found, and thus it is positive proof that the northwestern region of the DPRK was the centre of ancient evolution.

The fossil of “progenitor of frog” is helpful in illuminating the evolution of palaeobios and the birth of mankind.