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  1. Turtle | Species, Classification, & Facts | Britannica

    Dec 11, 2025 · Tortoises (family Testudinidae) live exclusively on land and have anatomic features distinguishing them from other turtles, but the term tortoise has long been used to …

  2. Turtle - Adaptations, Habitats, Lifespan | Britannica

    Dec 11, 2025 · Turtle - Adaptations, Habitats, Lifespan: Turtles have adapted to a remarkable variety of environments, but the greatest number of species occurs in southeastern North …

  3. Turtle - Reptile, Classification, Adaptations | Britannica

    Dec 11, 2025 · Turtle - Reptile, Classification, Adaptations: The title of the turtle order was formerly Testudinata, although the term Chelonia was also regularly used. Order Testudines …

  4. Habitats, diets, and characteristics of turtles | Britannica

    turtle, Any of approximately 300 species (order Testudines) of reptiles that have a bony shell overlaid with horny shields and are found in most parts of the world. Turtles have existed for …

  5. Sea turtle | Description, Species, Habitat, & Facts | Britannica

    Dec 16, 2025 · Sea turtle, any of seven species of marine turtles belonging to the families Dermochelyidae (leatherback sea turtles) and Cheloniidae (green turtles, flatback sea turtles, …

  6. Turtle - Evolution, Adaptation, Conservation | Britannica

    Dec 11, 2025 · Turtle - Evolution, Adaptation, Conservation: The earliest turtles known date to the Late Permian Epoch. Many of the oldest and most primitive forms lacked a shell, plastron, and …

  7. turtle - Kids | Britannica Kids | Homework Help

    A turtle is a reptile that has a shell covering its body. Turtles are known for moving very slowly. There are more than 350 species, or types, of turtle. Turtles are found in…

  8. turtle - Students | Britannica Kids | Homework Help

    Turtles are any reptiles whose bodies are encased in a bony shell. The shell is an essential part of the turtle’s body. The turtle can’t exit it, nor is the shell shed like…

  9. What’s the Difference Between a Turtle and a Tortoise?

    What is a tortoise anyway? Is it just a fancy way to say “turtle”? Well, actually, there’s a meaningful difference between tortoises and other turtles.

  10. Turtle - Longevity, Adaptations, Conservation | Britannica

    Dec 11, 2025 · Turtle - Longevity, Adaptations, Conservation: The long lives of turtles are often proclaimed as fact, but reliable evidence is lacking for many of the claims. On occasion, it has …