rep amp evol - Piper Gunderson, Jake Barker, and Kelsey...

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Piper Gunderson, Jake Barker, and Kelsey McCullough 4-29-09 Bio5 How did reptiles and amphibians evolve? Reptiles and amphibians are very similar. There are some very good reasons for this. One is because reptiles evolved from amphibians. Amphibians however, evolved from a freshwater fish. The evolution of amphibians began during the mid-Devonian period about 416- 356 million years ago. The amphibian evolved from an air-breathing fish with gills that lived in freshwater. The amphibian that evolved from this fish was called Ichthyostega. Ichthyostega looked like a salamander with body long fins, webbed feet, a fish tail and strong limbs. It had very broad shoulders and lived a fully amphibious lifestyle. Because of it’s broad shoulders, Ichthyostrga could move on land in a similar fashion to a seal on land. Ichthostega lived in shallow waters and lived in a moist environment when on land. Once amphibians began to evolve, they diversified a lot. The first kind of
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rep amp evol - Piper Gunderson, Jake Barker, and Kelsey...

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