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  1. Ichthyosauria - Wikipedia

    Ichthyosauria[a] is an order of large extinct marine reptiles sometimes referred to as "ichthyosaurs", although the term is also used for wider clades in which the order resides.

  2. Ichthyosaur | Definition, Size, Fossil, & Facts | Britannica

    Oct 17, 2025 · Ichthyosaur, any member of an extinct group of aquatic reptiles, most of which were very similar to porpoises in appearance and habits. These distant relatives of lizards and snakes …

  3. Ichthyosaurs - Earth History

    As it happens, Temnodontosaurus was the very first ichthyosaur to be discovered, by 12-year-old Mary Anning in 1811, who found remains of its skull and vertebrae on England’s Dorset coast. Despite …

  4. Ichthyosaur: Apex predator of the dinosaur-era seas

    May 20, 2022 · Ichthyosaurs were predatory marine reptiles that could grow to enormous sizes and ruled the seas during part of the dinosaur era. For a chunk of the millions of years when dinosaurs …

  5. Ichthyosaurs - Extinct Animal Encyclopedia

    Jan 6, 2025 · Ichthyosaurs were fascinating marine reptiles that roamed the oceans during the Mesozoic era. These unique creatures, which resembled modern dolphins, thrived for over 160 million years. …

  6. Ichthyosaur - New World Encyclopedia

    Ichthyosaurs (Greek for "fish lizard"— ιχθυς or ichthyos, meaning "fish" and σαυρος or sauros, meaning "lizard") were giant marine reptiles that resembled fish and dolphins, with an elongated, toothed …

  7. Introduction to the Ichthyosauria

    "Ichthyosaur" means "fish lizard," while "Ichthyopterygia" means "fish paddle." Both names are apt. The earliest ichthyosaurs had long, flexible bodies and probably swam by undulating, like living eels.

  8. Prehistory 101: Ichthyosaurs - Education

    Oct 19, 2023 · Learn about these prehistoric marine reptiles and see how features, such as basketball-sized eyes and a vertical tail, helped the ichthyosaur secure a place at the top of the ancient food chain.

  9. Ichthyosaur Guide: The Aquatic Marine Vertebrate - Ocean Info

    Ichthyosaurs were aquatic reptiles that resembled dolphins that lived 160 million years ago in the Mesozoic era. Their name Ichthyosaur is derived from 2 ancient Greek words, “ichthys” meaning fish, …

  10. Ichthyosaurus - Wikipedia

    Ichthyosaurus (derived from Greek ἰχθύς (ichthys) meaning 'fish' and σαῦρος (sauros) meaning 'lizard') is a genus of ichthyosaurs from the Early Jurassic (Hettangian - Pliensbachian [3]) of Europe …