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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. 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. …

  3. 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 …

  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 Animal Facts - Dimetrodon limbatus - A-Z Animals

    May 27, 2024 · Dimetrodon is an extinct, mammal-like animal that lived during the Early Permian Period, around 295–272 million years ago. Several ancient animal fossils have been …

  6. 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 …

  7. Dimetrodon - Pictures and Facts

    Dimetrodon is an extinct synapsid which lived approximately 295 million to 272 million years ago during the Permian Period. It was first discovered during the 19th century and was named by …

  8. Dimetrodon - Wikiwand

    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) …

  9. Dimetrodon: The Supreme Predator Before the Dinosaurs

    Feb 14, 2025 · However, long before dinosaurs ruled the Earth, Dimetrodon was the king of its ecosystem. This impressive carnivore, easily recognizable by its large sail-like structure on its …

  10. Dimetrodon | Size, Fossil Map, Pictures - Prehistoric Wildlife

    Aug 18, 2025 · Often considered a dinosaur, Dimetrodon was actually one of the pelycosaurs and predated the earliest dinosaurs by tens of millions of years. Dimetrodon is NOT a dinosaur, it …