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  1. 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 …

  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 …

  3. 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 …

  4. Ichthyosaurs - Earth History

    Despite being well-adapted to the sea, ichthyosaurs must once have been land-lubbers. They had two pairs of limbs, with digit-like bones rather than rays in their flippers. Initially the bones …

  5. 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” …

  6. Ichthyosaurus Animal Facts - Ichthyosaurus communis - A-Z Animals

    May 27, 2024 · Ichthyosaurus is an extinct marine reptile that lived during the Mesozoic Era, known for its streamlined body, dolphin-like appearance, and adaptation to an aquatic lifestyle.

  7. Ichthyosaurus - Pictures and Facts

    Ichthyosaurus is a marine reptile which lived approximately 200 million to 190 million years ago during the Early Jurassic Period. It was first discovered during the early 19th century and was …

  8. Ichthyosaurus: Facts and Figures - ThoughtCo

    May 6, 2025 · Ichthyosaurus has lent its name to an important family of marine reptiles, the ichthyosaurs, which descended from an as-yet-unidentified group of terrestrial reptiles that …

  9. 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 …

  10. 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.