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2014-07-15T11:52:28+05:30
The first animal on earth was a marine organism. it was not until 240 million years later that the first animal showed up on land.this was a four legged amphibian called Ichthyostega. which is a Greek term meaning ''fish roof''.
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2014-07-15T15:33:09+05:30

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The first animal on earth was a marine organism. After 240 million years later that the first animal showed up on land that is changed its habitat to the land and became and organism who lived on both land and water.It was a four legged amphibian called Ichthyostega it was about  600 million years .

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