Definition: The term "Anuran" refers to an extinct genus of marine reptile. It lived during the Jurassic period, approximately 254 million years ago. Anuran fossils have been found in many parts of the world, including North America, Europe, and Asia. They were small animals with four legs that had a segmented body. One notable feature of anuran fossils is their unique appearance, which included elongated tail structures and a flattened head compared to other reptiles. The definition of "Anurans" in this context means organisms from the Jurassic period, specifically living on land during this time. They were a significant chapter in Earth's history and are considered to be the first terrestrial animals after the Cambrian explosion. In summary, Anuran fossils tell us about an early evolutionary stage that occurred around 254 million years ago in the Late Jurassic period.
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