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  2. Portal:Frogs - Wikipedia

    en.wikipedia.org/wiki/Portal:Frogs

    The oldest fossil "proto-frog" Triadobatrachus is known from the Early Triassic of Madagascar (250 million years ago), but molecular clock dating suggests their split from other amphibians may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest ...

  3. Frog - Wikipedia

    en.wikipedia.org/wiki/Frog

    The oldest fossil "proto-frog" Triadobatrachus is known from the Early Triassic of Madagascar (250 million years ago), but molecular clock dating suggests their split from other amphibians may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest ...

  4. Goliath frog - Wikipedia

    en.wikipedia.org/wiki/Goliath_frog

    Goliath frog eggs and tadpoles are about the same size as other frogs despite their very large adult form. [citation needed] A lateral fold extends from the eye to the posterior portion of the tympanum. Their toes are fully webbed, with large interdigital membranes extending down to the toe tips. The second toe is the longest.

  5. African clawed frog - Wikipedia

    en.wikipedia.org/wiki/African_clawed_frog

    They are extremely hardy and long lived, having been known to live up to 20 or even 30 years in captivity. [47] African clawed frogs are frequently mislabeled as African dwarf frogs in pet stores. Identifiable differences are: Dwarf frogs have four webbed feet. African clawed frogs have webbed hind feet while their front feet have autonomous ...

  6. Northern leopard frog - Wikipedia

    en.wikipedia.org/wiki/Northern_leopard_frog

    Two burnsi morphs, a green morph, and a brown morph of the northern leopard frog Brown morph northern leopard frog in a wood chip pile in Iowa. The northern leopard frog has several different color variations, with the most common two being the green and the brown morphs, with another morph known as the burnsi morph. Individuals with the burnsi morph coloration lack spots on their backs, but ...

  7. Tadpole - Wikipedia

    en.wikipedia.org/wiki/Tadpole

    Common frog (Rana temporaria) tadpole. A tadpole or polliwog (also spelled pollywog) is the larval stage in the biological life cycle of an amphibian.Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial.

  8. Microhylidae - Wikipedia

    en.wikipedia.org/wiki/Microhylidae

    Frogs from the Microhylidae occur throughout the tropical and warm temperate regions of North America, South America, Africa, eastern India, Sri Lanka, Southeast Asia, New Guinea, and Australia. Although most are found in tropical or subtropical regions, a few species can be found in arid or nontropical areas.

  9. Tree frog - Wikipedia

    en.wikipedia.org/wiki/Tree_frog

    Tree frogs typically have well-developed discs at the finger and toe tips, they rely on several attachment mechanisms that vary with circumstances, tree frogs require static and dynamic, adhesive and frictional, reversible and repeatable force generation; the fingers and toes themselves, as well as the limbs, tend to be rather small, resulting ...

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