Tuesday, September 24, 2013

Your Inner Fish



The Tiktaalik was a crucial discovery to the theory of how water animals evolved into land animals. It is the transitional phase/intermediate for when water animals slowly evolved to become land animals. The Tiktaalik had features that would help it survive in both land and water.
Land features: limbs that allowed it to do push ups, eyes on the top of the head instead of the side, flat head instead of vertical head of fsih.
Water features: scales, fins

Homology: similar bone structure for similar functions. For example: 1 bone, 2 bones, a lot of blobs. <---this structure is the base (for the limb) throughout many different animals as they evolved.

Conditions best suited to find fossils:
-deserts
-sedimentary rocks
-correct exposure to the surface



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