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- Amphibian abstract "Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia (Greek ἀμφí, amphi, "both" + βíος, bios, "life"). They inhabit a wide variety of habitats with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Amphibians typically start out as larva living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely upon skin. They are superficially similar to reptiles but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators and in recent decades there has been a dramatic decline in amphibian populations for many species around the globe.The earliest amphibians evolved in the Devonian Period from sarcopterygian fish with lungs and bony-limbed fins, features that were helpful in adapting to dry land. They diversified and became dominant during the Carboniferous and Permian periods, but were later displaced by reptiles and other vertebrates. Over time, amphibians shrank in size and decreased in diversity, leaving only the modern subclass Lissamphibia. The three modern orders of amphibians are Anura (the frogs and toads), Caudata/Urodela (the salamanders), and Gymnophiona/Apoda (the caecilians). The total number of known amphibian species is approximately 7,000, of which nearly 90% are frogs. The smallest amphibian (and vertebrate) in the world is a frog from New Guinea (Paedophryne amauensis) with a length of just 7.7 mm (0.30 in). The largest living amphibian is the 1.8 m (5 ft 11 in) Chinese giant salamander (Andrias davidianus) but this is dwarfed by the extinct 9 m (30 ft) Prionosuchus from the middle Permian of Brazil. The study of amphibians is called batrachology, while the study of both reptiles and amphibians is called herpetology.".
- Amphibian thumbnail Amphibians.png?width=300.
- Amphibian wikiPageExternalLink v=onepage&q=Caudata%20Urodela&f=false.
- Amphibian wikiPageExternalLink 54-amphibiens_langen_amphibians_lang_langes_anfibios_lang_?lang=en_UK.
- Amphibian wikiPageExternalLink Browse.aspx?category=Environment&collection=Amphibians.
- Amphibian wikiPageExternalLink www.amphibianark.org.
- Amphibian wikiPageExternalLink www.amphibians.org.
- Amphibian wikiPageExternalLink www.amphibiaweb.org.
- Amphibian wikiPageExternalLink amphibians.
- Amphibian wikiPageExternalLink www.globalamphibians.org.
- Amphibian wikiPageExternalLink MON0017-threatened-amphibians-world.html.
- Amphibian wikiPageID "621".
- Amphibian wikiPageRevisionID "606476926".
- Amphibian align "right".
- Amphibian authority "Gray 1825".
- Amphibian caption "Top: Restoration of Eusthenopteron, a fully aquatic lobe-finned fish Bottom: Restoration of Tiktaalik, an advanced tetrapodomorph fish".
- Amphibian direction "vertical".
- Amphibian hasPhotoCollection Amphibian.
- Amphibian image "Eusthenopteron BW.jpg".
- Amphibian image "Tiktaalik BW.jpg".
- Amphibian imageAlt "Collage of amphibians".
- Amphibian imageCaption "Clockwise from top right: Seymouria, Mexican burrowing caecilian, eastern newt and leaf green tree frog".
- Amphibian imageWidth "250".
- Amphibian name "Amphibians".
- Amphibian subdivision ": Subclass Labyrinthodontia :: Order Temnospondyli : Subclass Lepospondyli : Subclass Lissamphibia :: Order Anura :: Order Caudata :: Order Gymnophiona :: Order Allocaudata".
- Amphibian subdivisionRanks "Subclasses and Orders".
- Amphibian taxon "Amphibia".
- Amphibian width "220".
- Amphibian subject Category:Amphibians.
- Amphibian subject Category:Classes_(biology).
- Amphibian type Amphibian.
- Amphibian type Animal.
- Amphibian type BiologicalLivingObject.
- Amphibian type EukaryoticCell.
- Amphibian comment "Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia (Greek ἀμφí, amphi, "both" + βíος, bios, "life"). They inhabit a wide variety of habitats with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Amphibians typically start out as larva living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs.".
- Amphibian label "Amfibieën".
- Amphibian label "Amphibia".
- Amphibian label "Amphibia".
- Amphibian label "Amphibia".
- Amphibian label "Amphibian".
- Amphibian label "Amphibien".
- Amphibian label "Anfíbios".
- Amphibian label "Płazy".
- Amphibian label "Земноводные".
- Amphibian label "برمائيات".
- Amphibian label "両生類".
- Amphibian label "两栖动物".
- Amphibian sameAs Obojživelníci.
- Amphibian sameAs Amphibien.
- Amphibian sameAs Αμφίβια.
- Amphibian sameAs Amphibia.
- Amphibian sameAs Anfibio.
- Amphibian sameAs Amphibia.
- Amphibian sameAs Amfibia.
- Amphibian sameAs Amphibia.
- Amphibian sameAs 両生類.
- Amphibian sameAs 양서류.
- Amphibian sameAs Amfibieën.
- Amphibian sameAs Płazy.
- Amphibian sameAs Anfíbios.
- Amphibian sameAs m.0hjf.
- Amphibian sameAs Q10908.
- Amphibian sameAs Q10908.
- Amphibian wasDerivedFrom Amphibian?oldid=606476926.
- Amphibian depiction Amphibians.png.
- Amphibian isPrimaryTopicOf Amphibian.