The oldest tadpole fossil ever has been found—and it’s a big one National GeographicThe oldest tadpole reveals evolutionary stability of the anuran life cycle Nature.comFossil Reveals Oldest Known Tadpole That Grew to the Size of a Hot Dog The New York TimesScientists in Argentina unearth oldest tadpole, from dinosaur times ReutersScientists discover oldest ever giant tadpole fossil in Argentina The Guardian