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  2. Lymph heart - Wikipedia

    en.wikipedia.org/wiki/Lymph_heart

    A lymph heart is an organ which pumps lymph in lungfishes, amphibians, reptiles, and flightless birds back into the circulatory system. [1][2] In some amphibian species, lymph hearts are in pairs, and may number as many as 200 in one animal the size of a worm, while newts and salamanders have as many as 16 to 23 pairs of lymph hearts. [2][3 ...

  3. Circulatory system - Wikipedia

    en.wikipedia.org/wiki/Circulatory_system

    In amphibians and most reptiles, a double circulatory system is used, but the heart is not always completely separated into two pumps. Amphibians have a three-chambered heart. In reptiles, the ventricular septum of the heart is incomplete and the pulmonary artery is equipped with a sphincter muscle. This allows a second possible route of blood ...

  4. Herpetology - Wikipedia

    en.wikipedia.org/wiki/Herpetology

    Herpetology (from Greek ἑρπετόν herpetón, meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, toads, salamanders, newts, and caecilians (gymnophiona)) and reptiles (including snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and tuataras). [1 ...

  5. Amphibian - Wikipedia

    en.wikipedia.org/wiki/Amphibian

    Amphibians are ectothermic, anamniotic, four-limbed vertebrate animals that constitute the class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all tetrapods excluding the amniotes (tetrapods with an amniotic membrane, such as modern reptiles, birds and mammals).

  6. Reptile - Wikipedia

    en.wikipedia.org/wiki/Reptile

    Reptiles, from Nouveau Larousse Illustré, 1897–1904, notice the inclusion of amphibians (below the crocodiles). In the 13th century, the category of reptile was recognized in Europe as consisting of a miscellany of egg-laying creatures, including "snakes, various fantastic monsters, lizards, assorted amphibians, and worms", as recorded by Beauvais in his Mirror of Nature. [7]

  7. List of reptiles of Northern America - Wikipedia

    en.wikipedia.org/wiki/List_of_reptiles_of...

    This is a checklist of American reptiles found in Northern America, based primarily on publications by the Society for the Study of Amphibians and Reptiles (SSAR). [1] [2] [3] It includes all species of Bermuda, Canada, Greenland, Saint Pierre and Miquelon, and the United States including recently introduced species such as chameleons, the Nile monitor, and the Burmese python.

  8. Tetrapod - Wikipedia

    en.wikipedia.org/wiki/Tetrapod

    Sauropsida (includes reptiles) A tetrapod (/ ˈtɛtrəˌpɒd /; [5] from Ancient Greek τετρα- (tetra-) 'four' and πούς (poús) 'foot') is any four- limbed vertebrate animal of the superclass Tetrapoda (/ tɛˈtræpədə /). [6] Tetrapods include all extant and extinct amphibians and amniotes, with the latter in turn evolving into two ...

  9. Batrachology - Wikipedia

    en.wikipedia.org/wiki/Batrachology

    Bufo periglenes. Batrachology is the branch of zoology concerned with the study of amphibians including frogs and toads, salamanders, newts, and caecilians. It is a sub-discipline of herpetology, [ 1] which also includes non-avian reptiles ( snakes, lizards, amphisbaenids, turtles, terrapins, tortoises, crocodilians, and the tuatara ).

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