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  2. Secondarily aquatic tetrapods - Wikipedia

    en.wikipedia.org/wiki/Secondarily_aquatic_tetrapods

    Several groups of tetrapods have undergone secondary aquatic adaptation, an evolutionary transition from being purely terrestrial to living at least part of the time in water. These animals are called "secondarily aquatic" because although their ancestors lived on land for hundreds of millions of years, they all originally descended from ...

  3. Tetrapod - Wikipedia

    en.wikipedia.org/wiki/Tetrapod

    Modern amphibians, which evolved from earlier groups, are generally semiaquatic; the first stages of their lives are as waterborne eggs and fish-like larvae known as tadpoles, and later undergo metamorphosis to grow limbs and become partly terrestrial and partly aquatic. However, most tetrapod species today are amniotes, most of which are ...

  4. Evolution of tetrapods - Wikipedia

    en.wikipedia.org/wiki/Evolution_of_tetrapods

    In addition, many tetrapods have returned to partially aquatic or fully aquatic lives throughout the history of the group (modern examples of fully aquatic tetrapods include cetaceans and sirenians). The first returns to an aquatic lifestyle may have occurred as early as the Carboniferous Period [ 3 ] whereas other returns occurred as recently ...

  5. Turtle power: Watch for these slow-moving terrific tetrapods

    www.aol.com/finance/turtle-power-watch-slow...

    Let’s look at two turtle species found throughout our area but usually in different habitats.

  6. List of tetrapod families - Wikipedia

    en.wikipedia.org/wiki/List_of_tetrapod_families

    Family Typhlonectidae (aquatic caecilians) Order Urodela (salamanders) Suborder Cryptobranchoidea. ... List of tetrapod families. Add languages ...

  7. Skeletal changes of vertebrates transitioning from water to land

    en.wikipedia.org/wiki/Skeletal_changes_of...

    As aquatic tetrapods began their transition to land, several skeletal changes are thought to have occurred to allow for movement and respiration on land. Some adaptations required to adjust to non-aquatic life include the movement and use of alternating limbs, the use of pelvic appendages as sturdy propulsors, and the use of a solid surface at ...

  8. Reptiliomorpha - Wikipedia

    en.wikipedia.org/wiki/Reptiliomorpha

    Some of these tetrapods (e.g. Archeria, Eogyrinus) were elongate, eel-like aquatic forms with diminutive limbs, while others (e.g. Seymouria, Solenodonsaurus, Diadectes, Limnoscelis) were so reptile-like that until quite recently they actually had been considered to be true reptiles, and it is likely that to a modern observer they would have ...

  9. Marine vertebrate - Wikipedia

    en.wikipedia.org/wiki/Marine_vertebrate

    Marine vertebrates are vertebrates that live in marine environments, which include saltwater fish (including pelagic, coral and deep sea fish) and marine tetrapods (primarily marine mammals and marine reptiles, as well as semiaquatic clades such as seabirds).