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Earth’s First Land Animals May Never Have Been Amphibian-Like After All

19 June 2026 at 20:47

New fossil evidence suggests that embolomeres did not undergo a metamorphosis the way that modern amphibians do when growing up, which challenges a long-standing scientific belief that amphibians, reptiles, and mammals evolved from animals that had a tadpole stage. Image credit: Berit Godring.

Paleontologists from the Field Museum of Natural History have described the fossilized remains of baby embolomeres, crocodile-like predators that prowled ancient rivers and swamps between 350 and 280 million years ago.

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