The Frog and the Jelly

Back home, the phylum Cnidaria (jellyfish, coral, anemone) and the class Amphibia are two of the most ancient groups of animals on the planet.

But let's say that, on an alternate Earth, many millions of years ago, the global climate became so hot and so dry (preferably from a volcanic eruption on the lines of the Siberian Traps) that all the amphibians and cnidarians went extinct with no modern legacy.

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The Frog and the Jelly

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