ARTHUR'S AMPHIBIANS CLIPART

Free amphibian clipart, frog clipart, toad clipart, salamanders images, newts graphics, caecilians illustrations is of large format and is suitable for presentations and projects and school usage for both students and educaters etc. The large images are too big for use on the internet. However you may use the thumbnail clip art pictures for web pages. Selections of both colour and black and white clip art are available, tha latter are suitable for coloring books. Please do not use them in any other collections of clipart.

                                                                        

Amphibians (class Amphibia), such as frogs, toads, salamanders, newts, and caecilians, are ectothermic (or cold-blooded) animals that metamorphose from a juvenile water-breathing form, to an adult air-breathing form. Though amphibians typically have four limbs, the Caecilians are notable for being limbless. Unlike other land animals (amniotes), amphibians lay eggs in water. Amphibians are superficially similar to reptiles.

Amphibians are ecological indicators, and in recent decades there has been a dramatic decline in amphibian populations around the globe. Many species are now threatened or extinct.

Amphibians evolved in the Devonian Period and were top predators in the Carboniferous and Permian Periods, but many lineages were wiped out during the Permian-Triassic extinction. One group, the metoposaurs, remained important predators during the Triassic, but as the world became drier during the Early Jurassic they died out, leaving a handful of relict temnospondyls like Koolasuchus and the modern orders of Lissamphibia.

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Last updated June 2014