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Amphibians

Amphibians. By: Sam & Lucas. What makes Amphibians different?. An amphibian is a cold blooded vertebrate animal. It is of a class that consists of the frogs, toads, newts, and salamanders. It is has an marine gill breathing larval stage followed by a terrestrial lung-breathing adult stage.

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Amphibians

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  1. Amphibians By: Sam & Lucas

  2. What makes Amphibians different? • An amphibian is a cold blooded vertebrate animal. It is of a class that consists of the frogs, toads, newts, and salamanders. It is has an marine gill breathing larval stage followed by a terrestrial lung-breathing adult stage.

  3. Exceptions frog. • he most species rich genus of frogs is Pristimantis. There are more than 450 species in this genus, with more being described each year (see the full list here). These frogs occur in northern South America, mostly in the Andes, with some species found in southern Central America. They are small frogs whose eggs are laid on land and develop directly into small froglets, bypassing the tadpole stage.

  4. A lot of people look to the fossil record for evidence of evolution. This is reasonable, if all the species we see today are connected by intermediates there should be some evidence of them in the fossil record. Unfortunately the fossil record is quite incomplete, but even so we have many examples of fossil intermediates which link two groups. We discuss three examples below, the fish-tetrapod transition, the dinosaur-bird transition, and the evolution of humans. These transitions are supported by both fossil and DNA evidence. These examples were chosen as the groups involved are very familiar. But there are many more examples of intermediates connecting distant groups of both animals and plants.

  5. Families Family Pipidae A type of clawed frog or tongue less frog. Family Rhinophrynidae Mexican burrowing frog

  6. Classification • Common FrogTree Frog Caecilians • Kingdom Animalia AnimaliaAnimalia • Phylumchordatachordatachordata • Classamphibiaamphibiaamphibia • OrderAnuraAnuraGymnophiona • FamilyRanidaeHylidaeCaeciliidae • GenusRanaHylaHerpetologica • SpeciesRana temporary H. CinereaCaeilian

  7. Bibliography • Wikipedia • Google • Ask.com • Yahoo.com

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