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Transitional Tetrapod Fossil

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Uploaded by on Jun 25, 2008

Tiktaalik, from the Inuit word meaning "large shallow-water fish," had a flexible neck. This is significant because in modern tetrapods like amphibians, the head is separated from the body, whereas in fish it is not. Although Tiktaalik still had gills, it had lost the bony gill coverings that fish use to fan water and promote oxygen intake. This suggests that the "fishapod" may have been at least partly air-breathing, like modern tetrapods. Further, although Tiktaalik clearly had fins, the well-preserved bony, wrist-like arrangements near the tips of the fins suggested that the animal could push its body up off the ground, offering support much like a foot does. These fins, though still used for swimming, were clearly precursors to legs.

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  • Creationists are already transitional fossils between primitive and modern Man.

  • Actually for every transitional fossil that we find they'll want to find one more before and one more after indeed continuing to move the goalposts.

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All Comments (20)

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  • @jazzx251 hehehehe true!

  • @StrawberryIce62769 Did you even watch the damm video?

  • Now we know it is merely a swimming fish. A false prediction. A great evolutionist fishing yarn.

    Google:

    Fossil Footprints Give Land Vertebrates a Much Longer History, sciencedaily

  • @StrawberryIce62769 Yes we do, its an amphibious tetrapod named Tiktaalik, I am sure you have heard of it. ;)

  • But you don't have a "transitional form" of fish to mammal. Where is that??

  • What a great video!

  • yeah, it's arguable that every fossil or living being is a transition from what once was and what some day will be, but this is more in reference to "bridging" the gap between the taxonomic groups beyond species.

  • Actually all fossils are transitional when you think about it.

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