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  1. Dimetrodon - Wikipedia

    Dimetrodon (/ daɪˈmiːtrəˌdɒn / [1] or / daɪˈmɛtrəˌdɒn / ⓘ; [2] lit. 'two measures of teeth') is an extinct genus of sphenacodontid synapsid that lived during the Cisuralian (Early Permian) …

  2. Dimetrodon | Sail-Backed Reptile, Prehistoric Predator | Britannica

    Dimetrodon, (genus Dimetrodon), extinct relative of primitive mammals that is characterized by a large, upright, sail-like structure on its back. Dimetrodon lived from about 286 million to 270 …

  3. 10 Facts About Dimetrodon, the Non-Dinosaur Dinosaur

    May 11, 2025 · Dimetrodon lived millions of years before dinosaurs and is actually a prehistoric reptile. Dimetrodon is known for its big sail, which it used to control its body temperature. …

  4. Dimetrodon | What's in a Name? - Harvard University

    Dimetrodon, which means “two measures of teeth,” was aptly named for its toothy grin. This genus of top predators used their mouth full of both large and small, conical teeth to grab, grip, …

  5. Dimetrodon - Description, Habitat, Image, Diet, and Interesting …

    This is the story of Dimetrodon, a powerful apex predator with a truly iconic feature—the enormous sail on its back. While visually similar to dinosaurs, Dimetrodon wasn’t one at all. It …

  6. Dimetrodon - Wikiwand

    Dimetrodon was probably one of the apex predators of the Cisuralian ecosystems, feeding on fish and tetrapods, including reptiles and amphibians. Smaller Dimetrodon species may have had …

  7. Dimetrodon | Research Starters - EBSCO

    Mar 6, 2025 · Dimetrodon is a notable early synapsid that lived during the Early Permian period, approximately 290 million years ago, and is frequently mistaken for a dinosaur; however, it …

  8. Are Dimetrodons Dinosaurs? Debunking a Common Myth

    Dec 16, 2025 · Dimetrodon is not a dinosaur, nor is it a reptile. The animal belongs to a major evolutionary branch that split off from the lineage leading to reptiles and birds long before …

  9. Dimetrodon Guide - Dinosaur.org

    If you’re exploring Dimetrodon, you’re examining a pivotal synapsid from the Early Permian period, predating dinosaurs by roughly 40 million years. This creature’s distinctive sail aids in …

  10. science-resources.co.uk - Dinosaurs and other prehistoric animals ...

    Uncover the secrets of Dimetrodon, the prehistoric predator often mistaken for a dinosaur. Learn about its iconic sail, carnivorous diet, and its role in Earth's evolutionary history!